Motorplus

Silverado returnless fuel system


silverado returnless fuel system 0L Chevy Small Block 2004, Mechanical Fuel Pump by TSP®. If you've tried to find the fuel pressure regulator on many late-model engines by looking in the engine compartment, you won't find it there because the regulator has been relocated to the fuel tank. With this 255 LPH In-Tank Retrofit Fuel Module with Hydramat for Returnless EFI Fuel Systems from Holley, changing to a more drivable EFI system has been greatly simplified. Fore Innovations LX/LC/LD Level 1 In the older system, fuel travels from the gas tank to the fuel rail using the fuel pump. Longer lengths of braided AN PTFE hose are available if needed. 0 Dual Pump Return Fuel System 1000HP $ 1,038. 95. Raise the fuel tank back into place and reinstall the support straps that hold it in place. NOTE: Fuel pressure range of a vehicle with a return type fuel system is 50-62 PSI, depending on engine vacuum. For those who want an in-tank, baffled fuel pump, but they don’t want to run an external regulator with a return line, the new Phantom EFI-Returnless In-Tank Pump is just the ticket. 0L (L76) is equipped with a "returnless’’ fuel injection system, also known as a demand system, and the latest-generation Multec injectors with USCAR connectors. This upgrade kit is ideal for GM Trucks utilizing the #1577 Edelbrock Supercharger System. The fuel pressure regulator attaches to the fuel module assembly. Flow Rate vs. 9 in. returnless fuel system. So obviously, when the fuel injection system fails, the engine fails and you can no longer travel the streets of Burke, VA. 99-02 trucks will need to convert the returnless TBSS rails to adapt to their existing fuel system (see above). 0 liter engine fuel pressure should be between 15 pounds and 18 pounds. If fuel rail pressure is higher than the amount programmed into the PCM, a P0088 will be stored and a service engine soon lamp may be illuminated. (This is my first fuel-injected project, so please be gentle with your advice and criticism. Poor Fuel Economy After Header Install; poor fuel economy after header install; Fuel Gauge Problems; Tahoe 1996 Manuals; Z71 roof rack backup lights; Are the 03'/04' 5300 V8 using Returnless Fuel systems? Keyless Entry Problem 2000 Silverado; Smog tubes for headers? 1995 Silverado Keyless reprograming; heater a/c fan; thermometer rigging The Chevrolet Cruze relies on microprocessors in the brain of the compact car’s fuel system to help. 26 gallon. Fuel Pump Location Most fuel injection system primary fuel pumps are located inside the fuel tank and have the fuel level sensor connected to the pump housing. Sierra, silverado. 4 6. com DA: 24 PA: 50 MOZ Rank: 13. 3 silverado with a returnless fuel system. autodiagnosticsandpublishing. Using a 3/8″ fuel hose I connected one end to the metal line with a hose clamp and the other end to a -8an hose to -8 female fitting. Standard cab. (incomplete) Fuel trims are +/- 5% so that was our main worry and its not that. Fuel Shut Off: 6000 rpm with automatic transmission and. Because fuel pressure varies widely according to driving conditions on PM systems, most pulse-modulated systems do not have fuel pressure testing ports. The most recent change to the 4. 425055. For 2004 Chevrolet Silverado ( Classic ) Applications: Torque: lb-ft ( Nm ) GMC Sierra ( Classic ) 380 lb-ft ( 515 Nm ) @ 4000 rpm Chevrolet Silverado ( Classic ) Fuel shut off: 6000 rpm Emissions controls: evaporative system catalytic converter "positive crankcase ventilation returnless fuel system" MATERIALS Block: cast iron Cylinder head: cast aluminum In 2005 the flex fuel went into the tank as well. Cadillac Escalade ( 2WD, AWD ) Cadillac Escalade EXT. The 2002-2004 L59 had a return-style fuel injection system and 50 psi of rail pressure. com. Vinylvent Blower Ducting; Air Conditioner Ducting Hose; Wire One of the ways this is possible is by using microprocessors to control an Electronic Returnless Fuel System. 3 liter and it has a single fuel line run to the intake manifold. Parts are just part of what we do. The regulator maintains proper fuel pressure by routing excess fuel back to the tank, via a return line. A 2000 Silverado does not have a fuel pressure sensor, it never knows the fuel pressure. 5L w/Returnless Fuel System FL708-B1C Set. ABS Wheel Speed Sensor and System Testing; 2009 Chevy Silverado 2500 3" lift kit install fuel pressure and the fuel pump electrical system. Dealership told me the fuel pump was bad. 5" exhaust, 4. -ft. I'm guessing one tells the ECM or something fuel pump pressure. 3 4x4 CCSB STX 3. Problem is the returnless system messes up everything. Auto Start/Stop enable. In 2004, truck engines went to a single 3/8" supply line, with NO RETURN LINE (returnless) except5. Also note the fuel pressure sensor was replaced on June 06,2015 (21,408 miles). This is a unique fuel system, in that is does not have a fuel pressure regulator. You can also find a fuel pressure sensor fixed on the fuel injector supply rail which allows the PCM to control the fuel pressure. This is a pulse width modulated signal that is sent to the fuel pump from the fuel pump driver module and engine computer to control the speed of the fuel pump which in turn will control the fuel pressure. Posted to GM Driveability on 11/18/2008 5 Replies. The 1999 Chevrolet Corvette has 3 NHTSA complaints for the fuel system, gasoline:delivery:fuel pump at 6,133 miles average. Fits: 2011-2014 Chevrolet Tahoe 4. I'm going to run a -10 feed line instead of the twin -6's I have now. Returnless Type Fuel System . 3L, 6. When residual oil pressure drops below approximately 7psi, the contacts in the oil pressure switch open and fuel pump shuts off. 2004 chevy silverado fuel line diagram. Page 2 of 2 < Prev 1 2. com P/N 18329 EFI-Returnless Phantom In-Tank Pump Internally regulated, returnless EFI fuel pump kit Featuring the same simple, fabrication free installation of the return style Phantom kits, but you just run one AN-06 supply line through an Aeromotive high flow filter to the engine, connect a proper power supply to the pump and bang, you're done! Supports up to 600 FWHP naturally aspirated and up The only reason I can see that a returned system would be better than a returnless for boost would be lower cost. 3L Variable Fuel Pumps. Aeromotive’s all-new returnless EFI Phantom is a cost-effective way to fuel a late model EFI engine swapped into an early, carbureted muscle car or truck. A fuel pressure test gauge can easily be connected to the fuel system to find out if the fuel pump is bad or not. 7:1 is vital to obtain maximum engine power and fuel economy. ( 1 customer review) $ 197. In fact because the fuel is always circulating in the system you get a more consistent fuel supply and a reduction in fuel temperatures. I need to decide to go with either a return style fuel system (PN 19-165) which requires a new tank (costs more) or a returnless retrofit system (PN 12-300). Low fuel pressure on 2012 Silverado. I already have a return style setup, but I'm switching to a sumped tank and twin walbro pumps. Electronic Returnless Fuel System (ERFS) - LMF The electronic returnless fuel system is a microprocessor controlled fuel delivery system which transports fuel from the tank to the fuel rails. Electronic Returnless Fuel System Fault Diagnosis and Isolation: A Data-Driven Approach Bharath Pattipati 1 , Krishna Pattipati 1 , Youssef A. The regulator becomes the last item before the fuel returns to the tank. I'm still waiting on some new filters and Reconnect the EVAP system vapor hoses to the fuel tank, and the fuel line to the fuel pump outlet. Your factory rails are designed to only be used as a return-less fuel system and thats where the main problem arises. 2007 Chevrolet Silverado Silverado 1500 - 4. The Gen-V LT-series engines are a little bit different from the LS series, particularly in the fuel system department. There was no issue of spilled fuel. 8,783,287 On a 2005 Chevy Silverado, for example, the on demand returnless EFI system has a turbine-style fuel pump inside the fuel tank that routes fuel through an in-tank filter to the in-tank regulator. Each harness is also Dyno run and tested before we send it out to you. One system that gives you everything you need to fuel your ride. 0 all had a fuel rail with 3/8" supply line and a 5/16" return line. Systems are available for OEM return and returnless applications, and include everything needed f … 2014 Silverado 1500 at a glance EcoTec3 engines: Silverado 1500 will offer three all-new EcoTec3 engines – a 4. Carbureted systems can benefit from a bypass regulator just as much if not more than an EFI system. Motor Man Fuel Injection sells a full line of New, Reconditioned and Remanufactured electronic gasoline fuel injectors. Does anyone have a factory service manual that talks about this "hat" on the fuel rail. I put the transmission into neutral and restarted the engine. Here’s another example of a problem that can trigger the light… Trouble Code: P0087 Fuel Rail/System Pressure – Too Low. 153 wheelbase. Designed as a direct-fit replacement of your worn-out or Meanwhile, returnless systems typically use a stand-alone fuel control module to modulate the pump’s speed to control fuel pressure. Chevy Fuel System Diagram Wiring Diagram Data Schema Chevy silverado fuel lines from from rear fuel tank to front fuel tank. 5" to 11" deep. 9,156. High flow injectors and a high pressure fuel pump to keep up with fuel demand on a returnless ain't cheap. As far as fuel pumps go, I know the EP-241 and EP-381 AC/DELCO pumps will fit in an 87-91 fuel injected Squarebody sending unit, and they put out the proper pressures for an LSx. 2021 Yenko/SC Silverado California Edition is a 710-hp Chevy truck Modified If you are not able to find the Chevrolet Silverado Fuel Injector from our online catalog or if you need any technical assistance, speak to our sales and support team through our toll free support lines 1-888-907-7225. 2007 Chevrolet Silverado CCSB. Chevy silverado 3500 66l 2005 in line electric fuel pump by carter. FUEL SYSTEMS. The fuel injectors are responsible for delivering fuel to the engine of your car, truck or automobile. 3L Vortec came in 2014, called the Gen V of the V6 engines, and this is now available as the base model for Chevrolet Silverado and Silverado 2500HD sagged only 3. It has an internal filter, internal regulator and the typical looking pump. Yes, all of our Fuel Pressure Gauges with the exception of the Tinted Series (GS-T11, GS-T11_30) can be used with a returnless fuel system. How to test a fuel pump driver module. This system will fit virtually any tank from 6 deep to 11 inch deep, plastic, steel, aluminum, corrugated or smooth. 275" thick above the tank mounting surface for added clearance when needed; The innovative clamping system allows you to locate the module anywhere in the tank beside your existing sending unit Gen III+ In-Tank Fuel Pump for Jeep CJ Universals, 1972-1986. Holley Sniper Returnless 450LPH In-Tank Retro-Fit Fuel Module Combined Cancer/Birth Defect WARNING This product can expose you to chemicals including Cadmium which is known to the State of California to cause cancer on birth defects or other reproductive harm. 3L Eng. A proper air-fuel ratio of about 14. It has 2 electrical connecters on the fuel pump head. 3L / 6. Block: cast iron. One type of system uses a dropping resistor, resulting in a two-speed pump. Fuel Filters 🚗. 19 $132. 25. However, if the fault persists beyond Step 5 on a returnless system, it becomes necessary to test all circuits and components in the fuel pump’s entire control system, since the entire system is involved in calculating and delivering the supply voltage that is ultimately sent to the fuel pump at any given moment. If it looks good, check the rest of the fuses related to the fuel system for signs of being blown and replace them, if necessary. 0L Part # 1577, 15770. Get Yours Today! We have the best products at the right price. If enough pressure builds up damage could be caused to your tank. filter is good,pressure seems good. 76 Fore Innovations designs and manufactures application specific aftermarket fuel systems. 29 Three interior trim colors are offered: Jet Black, Jet Black with Dark Ash accents and Cocoa with Dune accents. Choose top quality brands A1 Cardone, AC Delco, AUS Injection, BWD, BWD Automotive, DIY Solutions, Delphi, GB Remanufacturing, Replacement, Standard Motor Products. Fuel Tank GAS. 04 Aeromotive Phantom 340 Fuel System - Returnless w/ Throttle Body And the proven Kenne Bell BOOST-A-PUMP® works with any fuel system (returnless or return style). 1 per vehicle. Thanks for any info you can give. This was done for the returnless fuel system. this means the fuel pump and pressure regulator is working correctly. I have a 2007 Chevy Silverado Classic with a 4. I had A4 B6 with returnless fuel system (picture 3. Mechanical returnless systems simply relocate the pressure regulating valve into the fuel tank, directly after the pump. Now these primary pumps have the pressure regulator right in the pump housing in tank (Called Returnless Fuel Injection Systems) no lie. If you need to replace the fuel pressure regulator—or whenever you need to disconnect any part of the fuel system—relieve fuel system pressure before beginning to work on the system. Converting your classic Ford to an EFI fuel system doesn’t always have to a big complicated mess. Chrysler began switching to returneless systems in the early 1990s so I'd think yours is returnless with the regulator at the fuel pump. If you don't have a fuel pump or need an external pump, order the filter/regulator/pump kit 910-12805 or 910-12806. Log in. One question, are there any changes to be made to the tune? Gray Ghost- The abomination. This kit will only work with '07 models equipped with a non-returning style fuel system. The return fuel systems allowed the fuel to recirculate and heat upcausing more fuel vapor in the tank. Mid Model Year Update. Pressure should rise slightly when we accelerate the engine. 2005–2007 Chevrolet Silverado 1500 Extended Cab 4wd 2005–2007 GMC Sierra1500 Extended Cab 4wd Product Highlights • Fuel tank • Fuel lines (re-circulating or returnless) • Fuel pump – 58 psi (400 kPa) for LC9 and LS3 or 65 psi (450 kPa) for LSA • Fuel tank vent line from the tank to the evaporative emissions canister • Purge line from the canister to the engine purge solenoid • Air induction system that incorporates the mass airflow sensor This is a returnless fuel system. 8L V8 came to an abrupt halt when I was unable to disable the fuel pump relay because it is missing from the spot where it should be located according to the schematic in the owner’s manual. So if your truck's regulator is in need of a replacement, follow these steps to learn how to do it yourself. This is a newer 4. This is the same fuel cell design used in the Ford Cobra Jet, Chevy COPO Camaro and many of the MOPAR Drag Fuel System Jpg. . Fuel system cleaners Giving your vehicle’s fuel system a thorough clean out can have just as much of a positive impact as servicing the engine. Using this filter/regulator between the returnless style fuel rails and your return style fuel lines allows for a plug and play style conversion for retrofitting TBSS/NNBS intake manifolds onto 99-04 return style NBS (Silverado/Sierra) truck and other applications. Return, returnless, vacuum referenced and even a boost referenced This is my How-To on installing a Walbro 255LHP fuel pump on my 2003 Silverado SS with the return style fuel system. Starting in 04 all 5. If your Silverado is experiencing P0087, it is almost always going to be accompanied by drivability issues. Complementing the basic returnless systems previously described is an additional technological wrinkle—the variable fuel pump. 3L V6 > Fuel & Air > Fuel Injector. 0 had a returnless fuel pump these systems are known to last at least 150000 mi without replacement so check your vehicle to see if it has a returnable system, one indicator is no fuel filter on the frame rail it in the tank. ) The regulators can be mounted in any position. • Fuel tank • Fuel lines (re-circulating or returnless) • Fuel pump – 58 psi (400 kPa) for LC9 and LS3 or 65 psi (450 kPa) for LSA • Fuel tank vent line from the tank to the evaporative emissions canister • Purge line from the canister to the engine purge solenoid • Air induction system that incorporates the mass airflow sensor Chevrolet Silverado 1999-2006: How to Replace Fuel Pressure Regulator. This kit is for all returnless fuel rails. A pretty good estimate is that if a pump is run at 60psi in a traditional return type system vs. This would be the least expensive route for me since I already own everything from a previous project combined with the factory TBI fuel system. 3L Vortec MFI Spider Injector System For Vehicles with returnless fuel system (No fuel return line going back to fuel tank. 10. Intake manifold: composite. If the fuel pressure regulator malfunctions or fails completely, one or more symptoms will occur. We make it simple, 3 wires and your running. Read about the installation of a DieselSite CPR Fuel System with braided stainless steel fuel lines, an electric in-line fuel pump, a pre-pump fuel filter and a Aeromotive pressure regulator, only GM-Specific plug n play installation kit for the Walbro F90000267 450LPH fuel pump for 2004+ GM returnless fuel systems. The fuel pump is inexpensive, by more modern comparisons. Any of my search term words; All of my search term words; Find results in Content titles and body; Content titles only Nnbs silverado returnless fuel system questions (1 2 3) rednekferlife101 on 04-15-2016. Nov 18, 2015 · The low pressure (LP) pump is located in or near the fuel tank, while the high pressure (HP) pump is located on the engine. 0L, 8. Departments. Fuel system questions 2007 Re: return fuel system to returnless I have a 2005 Sierra fuel pump that I will be running in a custom stainless tank. for the F-250 and 5. 3L Vortec MFI Spider Injector System | Returnless Fuel System. If you’re going to replace the fuel pump, you will check the O ring inside. Make your vehicle faster and more powerful with premium-quality performance fuel system parts stocked on our website. If no fuses are blown, have a helper turn the key while you listen for fuel pump relay clicking on. Chevy S-10 Chevy Silverado 🚗. The module kits include all the hardware to install into your existing fuel cell. MSD Part 2900 is a Master Kit that includes everything needed to upgrade your fuel system, including pre- and post-filters and a special return-less fuel pump. Unfortunately his stock fuel lines and returnless fuel system could not keep up with the fuel demand at higher rpm. ACE Returnless Twin Walbro 450 Fuel System quantity. Re: 1999 Silverado running rough 5. Condition: New: Brand: Standard: Part Name: Fuel Injector: Fitment Type: Direct Replacement: Superseded Part Number: 2006 2005 2004 2003 2002 2001 2000 1999 1998 1997 1996 Chevrolet, Chevy K1500 C1500 S10 GMC Sierra 1500 Blazer Savana 2500 Astro, Sonoma Safari Oldsmobile Bravada P30 Jimmy Isuzu Hombre P3500, Express Silverado With Returnless System With Fuel Return Line, Extended Cargo Van The fuel pressure regulator on your Chevy Silverado helps provide constant fuel pressure as you drive. Dont really want to have to worry about using a car intake with truck accessories, but i may have to if i want to run returnless fuel rail. of torque (413 Nm), a 5. Spider injector body is disassembled and ultrasonically cleaned - stripped of Edelbrock E-Force Supercharger Supplemental Fuel Pump Kit 2003-2007 GM 1500 Truck Returnless-style Fuel System $579. You can chose both your hose and fitting colors with this kit. 7 V6 2008+ → Fuel System → Fuel System Packages Fuel System Packages 2015+ LX/LC Hellcat L2/L3/L4 Fuel System (triple pump) I have a 07 suburban with 5. The Top 5 Symptoms of a Bad Fuel Pressure Regulator On older vehicles with a continuous fuel system, the regulator is typically a vacuum-controlled device installed on the return side of the fuel rail. 350 Chevy Small Block V8 Fuel Injection Systems in-stock with same-day shipping. , compared to 6. 00. Thanks in advance. 3L 2002-2006, S10 2. a returnless PMW, the power reduction at idle and cruise is 50%. Select your fuel system components fuel system parts for 2004 chevrolet silverado 1500 z71. Easy to use parts catalog. Cylinder head: cast aluminum. If your truck is DBC and you have a fuel return line, this doesn't entirely apply to you. Even though this electric motor is submerged in fuel Fuel System Components for 2017 Chevrolet Camaro Sedan, with v. This engine also replaced the previous generation engine in the aforementioned truck and van applications. You need the minimum flow rate at your fuel system’s operating pressure. Return-less LS swap kits by Hot Rod fuel hose - Found HERE Just converted from returnless to return style fuel system. You will not find a stronger warranty from any other Achieving maximum fuel economy potential, while meeting requirements for quality, emissions and performance with advanced engine and transmission fuel saving features in conjunction with CNG variants pose challenges: ¶ Advanced Combustion ¶ Variable Valve Timing ¶ Active Fuel Management ¶ Down size boost ¶ Electronic Returnless Fuel System Modern pumps are a returnless design, meaning they pump only what the engine needs, rather than over-pumping fuel and having the excess cycle back to the tank in a separate line, like found in a 40-year-old car. Trying to piece together the fuel system for the LS1 ('99 Z28 donor) that's going into my '72 Chevy shortbed. com The source for official specifications, payload, towing capacity, and other information about the 2010 Chevrolet Suburban 1500 & 2500 from the truck and SUV experts at Truck Trend. L illumination" , hmmm. 62. Fuel Pumps. Its serious performance you will never know is there! Click here to learn more about this universal in tank fuel system. Written by Gregs78cam. See all 26 photos The Fuel Command Center contains a fuel reservoir and high-pressure pump. The first thing this formula will do it help clean the inside of the fuel tank itself. Fortunately, the fuel system in a car requires only minor tweaks. The top section of the regulator is connected by a small vacuum hose, while a large return hose is connected to its side. I'm switching from a -6 return line to a -8. Secondly, is to allow the fuel pump to prime the fuel system for the next start. Get yours online today and pick up in store. ) Fuel Pressure Feedback Sensor (GT, Cobra, Shelby) Feedback Loop Control; One main principle in delivering the correct amount of fuel relies on feedback from the Recommended fuel: regular unleaded or E85: Maximum engine speed (rpm): 5800: Emissions controls: close-coupled catalytic converter, Quick Sync 58X ignition, returnless fuel rail, fast-response O2 sensor: Estimated fuel economy: 2WD (City / Hwy): 16 / 23: 4WD (City / Hwy): 16 / 22 Silverado return fuel system conversion With that being said, let’s take a look into selecting proper fuel system components (i. Gas, 6 1/2 foot bed, 1500 without crew cab. Where is the fuel filter located on a 2007 Chevy Silverado? On gas models the filter will be under the truck running along the inside of frame rail some times above a cross member by drivers door. Anyway, one of the guys there said that if he's not mistaken, in 2005 GM started a "returnless" fuel system, and therefore, without intensive mods The 2006 Silverado had what is called a returnless fuel system. 3L 1997-2005, S10 4. Your Chevrolet Silverado 1500 uses multiple fuel injectors to get the fuel into the engine. The fuel-injection system for the LS wants to see 56 psi of constant fuel pressure. That is one reason the 04 Hp tuners line pressure. 3L, VIN Code W Returnless systems have one port on the fuel rail. The fuel sending unit inside the gas tank has an arm attached to a Holley Sniper in-tank retrofit fuel pump modules offer the easiest way to convert your vehicle to an in-tank EFI fuel system. Gas, std cab, 6. 3L engine. 6 1/2 foot bed 1500 without crew cab. The regulator maintains a preset pressure to the fuel injection system, which is 55 to 62 psi (or 48 to 54 psi on engine VIN code Z). The Electronic Returnless Fuel System on the Cruze increases fuel economy by 2 percent compared to vehicles with a standard fuel system, said Terry Wilton, General Motors’ senior manager for fuel system components. Multec II to EV6 style injector adapters will be required ( found here ). The problems arose again so i changed it again oops did'nt help. February 25, 2016 ·. The EFI modules are available with single 340 LPH fuel pumps in both return and returnless system designs. com/Software_Catalog. He used his NBS rail, cut n welded extensions and - Includes Complete Fuel System: Sniper EFI Retrofit Returnless Module, 20' 3/8" Vapor Guard Fuel Hose, Five (5) Stainless Steel Hose Clamps, Post Filter and Various Earls Fittings and Caps - Retrofit Fuel Module Installs on Any Fuel Tank 7" to 12" Deep to Fit Wide Variety of Applications Chevy Silverado fuel lines from from rear fuel tank to front fuel tank. The Gen IV V8s represent one of GM’s first applications of USCAR-standard electrical connectors for the fuel injectors. 3L / 5. 1999-2003 4. Reducing the internal temperature of the fuel tank results in lower evaporative emissions. Fuel system cleanliness is important on any system, but never more so than on a returnless system. The module is now responsible for passing vapor along to the EVAP system, pumping, filtering and regulating the flow of fuel. If you have a very early LS with a regulator and return fuel line on your rail use line kit 6602-00. Add to Cart. Pressure. That is one reason the 04 Car is a 6 speed with stock fuel system other than a slightly bigger pump and injectors. sold: 01 lb7 drw cclb 1 ton 4x4 GM DRW club member #95 15' srw ccsb 3500 Denali debadged, 35% tint on the front half glass and 5% over stock tint on the back half glass, line-x bed, leveled with cognito stage 3 with stock keys, 20x12 fuel throttle wheels, 285/55/20 Mickey Thompson atz p3 tires, 5000k 55w hid headlights, led Ls swapped rx7 for sale Ls swapped rx7 for sale A returnless fuel system reduces the internal temperature of the fuel tank by not returning hot fuel from the engine to the fuel tank. Where is the fuel filter located on a 2005 Chevy Silverado 2500? Yes, there is the main filter in the frame rail but then there is a strainer inside the fuel tank and if you have the enclosed fuel pump unit there will also be one inside the enclosure on the As technology has introduced more precise injection control, a large number of vehicles have gone to what are called "returnless" systems, where there's no longer a second fuel line coming back from the engine compartment to return excess fuel supply. This supplemental fuel kit is required for all 2003-’07 GM 1500 Classic Trucks, equipped with a returnless fuel system, utilizing the #1577 E-Force supercharger. 3. Returnless Fuel So after reading bgeralds how to, I had a couple questions and I figured Id address them here this only applies to DBW and returnless fuel systems. Buy online and pick up in store, or get fast, free delivery on qualified orders. Edelbrock E-Force Supplemental Fuel Pump Kit for 2003-07 GM Silverado/Sierra w/Returnless Fuel System is required for GM trucks utilizing E-Force Supercharger 350-1564. That is one reason the 04 Air Intake Systems Cold Air Intakes Short Ram Air Intakes Apparel Apparel Brakes, Rotors & Pads Brake Calipers - Perf Brake Kits - OE Brake Kits - Performance D&S S&B Air Intake System w/ Oiled for 06-07 Chevy & GMC Duramax 6. The P069E code affects these electronic Buy a 2006 Chevrolet Silverado 1500 Fuel Injector at discount prices. high 2005 Chevrolet Chevy K Silverado - 4WD Fuel System Description (Pick-up and Utility) Fuel System Overview. He will be doing his fuel system and hopefully we can make more steam. First I dropped the fuel tank by removing the 3 hoses and 2 electrical connections. 5 ft box. 1 Answer. Find 2006 CHEVROLET SILVERADO 1500 Fuel Injectors and get Free Shipping on Orders Over $99 at Summit Racing! Fuel Injection Spider System, Chevy, 4. Im in the process of cleaning up a manifold and wanting to install it since it has external injectors instead of the internal Spider Injectors but the new manifold Im replacing it with has a return line. In Tank EFI Fuel Pump Conversion . 8L, 5. Failure to use the supplemental fuel pump may result in engine damage and void your Edelbrock E-Force Supercharger warranty. 15804 Let me know what you find. Wix 33737 Corvette style filter/regulator (and fuel return plumbed back into the factory/stock fuel lines, through the switch valve), lastly to the 2005 returnless the fuel rail inlet. It also includes its own filter built right into the fuel pickup of the unit. What the three way regulator does is to return to the fuel tank any volume of fuel that is excess of 7 psi. Replacement of the Fuel Tank Pressure Sensor reliably monitors pressure in the vehicle's fuel tank. $3,009. 3 that is a returnless fuel injection [ ] set a random misfire code and all of the listed codes. The fuel system is a returnless on-demand design. Applications: GMC Sierra ( extended cab ) Chevrolet Silverado ( extended cab ) Block: cast aluminum. First year of the SS Silverado (built from 2003-2007) This is the only year that features a return-style fuel system. 1L 2004-2009 at Walmart. 3 L • Relocation of Fuel Filter to interior of tank as part of the Fuel Sending Module • Reduction in fuel filler neck diameter, from 2” to 1” • Addition of FLVV (Fill Limit Vent Valve) at the base of the fuel filler neck, preventing use of HOW ELECTRONIC RETURNLESS FUEL SYSTEMS WORK. Wonder if those would work for a returnless system too? Trucks (except for some L59 Z engines) went returnless in 2004 right? The fuel pressure regulator on your Chevy Silverado helps provide constant fuel pressure as you drive. One issue I found when I swapped the old carbed 350 out for a TBI 350, was while driving my truck, I noticed that after using about 13 gallons out of a 20 gallon tank, if I stopped too hard the fuel would slosh forward away from the pump pick-up and the truck would stall. Put it back into gear, and continued on. Providing timely, unbiased comparisons of innovative seed genetics to improve yield and profitability for American farmers. The fuel system is basically made up of the following: Single Fuel Pump (Mustang GT), Dual Fuel Pumps (Cobra, Shelby, GT500, Ford GT etc. Acdelco 10381608 gm original. The E85-compatible injectors also incorporate USCAR-standard electrical connectors. If I keep the stock system, I'd have to pay 400$ Fuel Tank Silverado, sierra. I just ordered a pre bent fuel line kit from lines to go due to a leak im having between the fuel filter and tank. 95 Dodge Performance Upgrades → Dodge Challenger SRT8 Hellcat Upgrades RT 6. 3L flex fuel engine is 40-54 PSI, depending on engine vacuum. Free 2-day shipping. maybe you are refering to the older non-high pressure pumps. 3L Spider Assembly. 3 liter engine, starting to cut out, sputter then it stalled. FLASH SALE! Up to 20% off Interior & Soft Trim - use code: SOFT. Does anyone have any ideas on this? Would removing the “fuel system control module” (fuse #21) instead of the fuel pump relay work Like said, this car will not ready the fuel system monitor. Fuel leak above fuel cooler chevy and gmc duramax diesel forum rh duramaxforum 2005 chevy silverado fuel line diagram 2001 chevy silverado fuel line dimension. Edelbrock E-Force Supplemental Fuel Pump Kit, 2003-07 GM Silverado/Sierra w/Returnless Fuel System $ 579. problem being my return feed from the fuel reg (not the motor as its a returnless system) goes Fuel rail pressure sensor voltage is received by the PCM, which adjusts fuel pump voltage to accomplish the desired amount of fuel rail pressure. Now start the engine so we can test the performance of the pump. 6L Diesel LLY LBZ; returnless mustang Walbro Ford GT 250lph supercar e85 improved fuel pump cobra; ABS Wheel Speed Sensor Front Left Holstein 2ABS1853; Disc Brake Rotor-Original Performance Front WD EXPRESS 405 09095 501 FUEL SYSTEM INFORMATION 1999-2003 4. A vacuum line connects the regulator to a source of engine vacuum, This morning while driving to work, my 2005 Chevy Silverado w/ 5. 3s have the same style that your 6. 275" thick above the tank mounting surface for added clearance when needed; The innovative clamping system allows you to locate the module anywhere in the tank beside your existing sending unit The 2003 Chevrolet Silverado 2506. Kbooks0621 on 09-23-2020. Vehicles equipped with a returnless system manage fuel flow without a return line to the fuel tank and with no externally seated Together with the fuel flow, the amount of fuel pressure remains the same as it reaches the injectors while a returnless type system uses a powertrain control module to control fuel delivery. 2005 Chevrolet Express 2500 Express 2500 - 4. Ok guys I have this Two wheel drive chevy that runs rich on both banks. Fuel Tank Silverado, sierra. Buy Genuine Walbro F90000267 450LPH E85/Gasoline Compatible Fuel Pump Chevrolet Silverado 3500 6. Will this pump work on a 04 GMC with a returnless fuel system? August 5, 2020. The fuel pump depth is fully adjustable from 7. com/i-23899662-walbro-f90000267-450…. The Jeep conversion industry has seen various evolutions of fuel system modifications to accommodate modern fuel injection engines, including the installation of external fuel pumps and the installation of various variable pressure regulator systems. On a 2005 Chevy Silverado, for example, the on demand returnless EFI system has a turbine-style fuel pump inside the fuel tank that routes fuel through an in-tank filter to the in-tank regulator. 8 in. com DA: 16 PA: 32 MOZ Rank: 82 This page is about Fuel Return Line Diagram,contains 34 12 Valve Cummins Fuel System Diagram,2010+ Shelby GT500 Return Style Fuel System PLUS 1000+hp ,Need ryobi 725r fuel line diagram,Diesel Bombers and more I subscribe to the over 500 whp get rid of corvette regulator and returnless system school of thought. $502. How to test a fuel pump on a 2000 Ford Taurus Electronic Returnless Fuel System. This code is most common on vehicles that use a returnless fuel system. Displacing 4. Either philosophy could be correct, depending on the application. catalytic converter. You can combine this with a WIX33737 filter to regulate your pressure to 58-60psi. 2 bar or higher, it will be more expensive but regular fuel line is sometimes only rated for 25 psi. Ford Explorer XLT Ask Question. This system operates at only nine to thirteen pounds per square inch (PSI) of pressure. You have the returnless system, and your FPR is part of the fuel pump assembly. 34 gallon. 8/5. pknowles on 06-08 Aeromotive Phantom 200 Fuel System - Returnless w/ Throttle Body. Whenever you work on them, you'll need to relieve that pressure using something called a Schraeder valve, which is located on the fuel rail in most vehicles. Thus, the only line on your fuel rail is the feed line - so hook that up to a 3/8" line all the way back to the filter. Shields Sanitation Hose; Super PVC Sanitation Hose; VAC Extra Heavy Duty FDA Hose; Sanitation Hose Fittings; Ventilation. (lb-ft / Nm @ rpm): 260 / 353 @ 2800 305 / 414 @ 4600* 335 / 454 @ 4400* (gas) 348 / 472 @ 4400* (E85) Recommended fuel: regular unleaded regular unleaded or E85 regular unleaded or E85 Maximum engine speed (rpm): 5600 6000 6000 Emissions controls: close-coupled catalytic converter, Quick Sync 58X ignition, returnless Need a returnless fuel supply for your fi upgrade. Aeromotive Stealth The HIL Fuel System Rig and a Chevrolet Silverado truck were used to collect and analyze the fuel system behavior under different fault conditions. The fuel system pressure diagnosis can identify the fault if the fuel system delivers fuel. Mount the control/power module. 8' box. The pump strength is regulated by the amount of voltage the pump is LS or EFI swapping your C10 / K10 73 - 87 squarebody truck. I did -8 feeds that Y into -10 to fuel filter to the front of the car through the right rail crossovered to the left rail then to regulator. I use Bosch 210s as well, 2 AEM pumps on all the time. Return fuel systems use the same value in the entire IFR table. Watch the transformation here! To make your LS swap a little less painful, we put together this 2-in-1 fuel filter and fuel pressure regulator fitting kit for you. I just installed an s10 vortech supercharger kit on it (theres more about my messed up project in the blowers/bottles section). Maximum current supplied to the fuel pump is 15 amps. Mar 15, 2012 #11 Other Fuel System Fuel Gauge problem of the 2001 Chevrolet Silverado 1500 15 Failure Date: 10/03/2006 2001 silverado z71 5. An ACDelco GM Original Equipment Fuel Injector Kit comes with everything you need to service a fuel injector, and is a GM-recommended replacement for your vehicle’s original component. Let me get my pocket flashlight. 0 Brushless Gear Pump, aircraft filler cap, ORB-10 outlet, AN-08 baffled return and roll-over protected AN-08 vent. 3-liter V-8 L83 gasoline engine And the proven Kenne Bell BOOST-A-PUMP® works with any fuel system (returnless or return style). by 1. P/N 19310: Fuel Cell, True Variable Speed, 15 Gal, 90-Deg Outlet, Brushless Spur 5. Instead, a professional-level scan tool and technical information system is required to accurately monitor and diagnose the fuel pump’s pulse modulation cycle. 2007 ford esccape 4 wire outlet diagram 1995 silverado fuse box diagram dish turbo hd wiring Returnless Rail Stealth Fuel System That is only on flex fuel. 1‑800‑243‑8355. Several data-driven classifiers, such as support vector machines, K- nearest Neighbor, Discriminant analysis, Bayes classifier, Partial- least squares, Quadratic and Linear classifiers, were Professional Products is currently one of the industries’ largest suppliers of street and SFI-certified harmonic dampers, and also offer a full line of fuel system products. 250 lbs. , pumps, filters, fuel lines, and other items), needed for a carbureted system—based on horsepower. 5 psi. Silverado High Country’s heated and cooled leather-appointed seats come in an exclusive Saddle color. A returnless fuel system reduces the internal temperature of the fuel tank by not returning hot fuel from the engine to the fuel tank. The 2015 Silverado’s MyLink system gives customers the best of both worlds when it comes to High-pressure pumps, like those in port fuel injection (PFI) systems (35 to 45 psi), require more current than low-pressure pumps in throttle body injection (TBI) applications (9 to 13 psi). FAST 301235005E Ez-Efi Sbc Multiport System W/ Intake, Fuel System And Red Throttle Body. The 2005 chevrolet silverado has 3 nhtsa complaints for the fuel system gasoline at 65000 miles average. Now it's acting up again. Later LS engines ('99-up) have a returnless-style fuel system. This is done by a device called a fuel pump driver module. The regulator routes excess fuel back to the gas tank to maintain fuel pressure. Mike built a custom sump to help keep the inlet covered with fuel. 1 SRT8 & V6 2005+ → Fuel System. The fuel pressure regulator is on the fuel rail, and has a vacuum line to the intake manifold. Fuel System. Tests clearly prove 75% (Street) and 100% (Competition) gains from any vehicles 12V pump(s) vs. It did it again and now it Emissions are controlled by a close-coupled catalytic converter, Quick Sync 58X ignition, returnless fuel rail, fast-response O 2 sensor. I’ll get back to that, but first let me describe what we had before with the V6. In the Frame Rigidity test measuring cab/ bed misalignment, Silverado 2500HD measured just 0. 3l -- the gas gauge works only intermittently and often shows wrong fuel level. The Hot Rod fuel hose Return-Less LS swap kit, for a return-less system you will need 20ft of hose if mounting the corvette regulator/filter close to the tank. This is a well needed system for those that are adding pumps and wanting to get all they can out of the factory fuel system / rails. I felt like it might not be the pump but a regulator (didn't know my truck didn't have one at the time). The line going to the fuel filter will be the fuel supply line and the other. 2004 Chevrolet Silverado 2500 HD LS 6. 3L L83 engine and two components: The5. The earliest and simplest type of fuel injection, single-point simply replaces the carburetor with one or two fuel-injector nozzles in the throttle body, which is the throat of the engine’s air Concorde Fuel Line 2004 2. GMC Sierra Denali. I turned key off and back on and started engine and it The light is part of your vehicle’s on-board diagnostics (OBD) system and can indicate anything from a loose gas cap to a major repair like a catalytic converter. 6. 2008 Chevrolet Silverado Silverado 1500 - 4. trailer and 7% grade, Silverado The returnless system is not vacuum regulated so that means you only have to plumb one fuel line. Toggle menu. There are two types of returnless systems - Mechanical and electrical. Im guessing its somehow a returnless system. In 03 or 04 they went from a return style fuel system (FPR on the rail like you're talking about) to a returnless system. Tons of guys find our website when researching info on how to do new fuel lines for their squarebody 73 - 87 Chevy and GM trucks. for the Ram 2500. Make sure all hoses are correctly routed. , beating the F-250 at 1. Silverado; Ford . This is using the combined Corvette C5 filter and regulator assembly bolted very near the fuel tank. Includes GMT800 / GMT900 Silverado, Sierra, Escalade, Tahoe, Chevy Colorado/ GMC Canyon and many others. I've got a 2006 4. SFX Performance has been supplying customers with quality performance parts, wheels and accessories since 1997 and with over 20 years in the business and experienced techs and sales reps with years of automotive performance, motor sports and racing experience our technical advisors can assist you with any automotive project. As featured on Classic Truck’s Week to Wicked. We get asked enough times what else guys need in addition to our PTFE hose kits in order to complete the s ECOGARD XF55215 Premium Fuel Filter Fits Chevrolet Blazer 4. See Fuel Pump Tech . 99-03 ls engines have a return line. It is sloped. This combines the Sniper EFI Self Learning Throttle Body, with an easy to install In-Tank Retrofit Returnless Module, 20 ft of Earl's Vapor Guard Fuel Hose, and the required fittings. Lines - To - Go. The regulator is in the tank. 1 5. ‘04’ - 07 used a “returnless” fuel system – just a fuel feed line, no return line; this changes the required values of B4001 (Injector Flow Rate) OEM fuel systems using a return line are “manifold referenced” – FPR in the fuel rail; in these systems a 2D graph of B4001 values looks like a straight (flat) line from left to right; in returnless systems a 2D graph of B4001 values looks like a sloped line – from lower left to upper right SOFTWARE Catalog:http://www. Symptoms: P0087 Chevy Silverado. Does the fuel pump run continuously with 'returnless' fuel system? Asked by Wiki User A co-worker purchased a 2004 Chevy Silverado in late '03 and it had the fuel filter in the tank. 7L / 6. This can be done by adding a fuel system cleaner to your vehicle’s fuel tank and working it through the system. Some background first. Remanufactured OEM 4. Our systems are machined and assembled in house, in sunny Clearwater, Florida. 8s and 5. If your Silverado's engine is stalling and displaying the symptoms below, the fuel pressure regulator might have gone bad. A liter of fuel weighs about 1. Low fuel pressure in the fuel system will cause a faulty air-fuel mixture and then, in return, cause weak combustion. 3 & 6. This can be felt as misfires on acceleration or even at idle. Fuel lines are under high pressure. Exc. 2006 Chevrolet Express 2500 Express 2500 - 4. It has an internal regulator attached to it so that part of the equation is taken care of. 6 1/2 foot bed 2500 without crew cab. To get lph divide lbs. To maintain proper fuel pressure under all driving conditions, a fuel pressure regulator is used. Includes line clamps, and all fittings and connectors needed. Supplying fuel to the Ecotec required a special delivery system. Although modern vehicles also use fuel pumps that send the gas from the tank to the engine block, fuel injectors are vital components that further aid the combustion process by turning that fuel into a spray of atomized particles to ensure it mixes with air well. With a return style system, fuel pressure will always be regulated to a consistent pressure at the fuel rail. The 1999-2003 LR4 and LM7 had a return-style fuel injection system. 10's/31 spline, widened rear's, metco's, addco's, ridetech's 415hp/381tq That is only on flex fuel. If theres anything you feel I need to add or change, feel free to chime in. 2004-2007 Chevy Silverado and GMC Sierra 4. Home Furnishings Free 2-day shipping. In the Passing Ability test from 30-55 mph with a 9750 lb. I replaced fuel pump 2 months ago bc of hard start issue. The Fuel System is a returnless on-demand design. Mitchell says to read the codes from the FPCM (to determine what, specifically it had seen and didn't like). Chevy Silverado New Body Style 4. I replaced and it had no effect Truck runs good, mileage is single digits. 0 4X4 - Sold #2817974 - 03/12/14 07:59 PM Re: Marauder Returnless Fuel System [Re: musclemerc] 2004_p71 no replacement for displacement Shop 350 Chevy Small Block V8 Fuel Injection Systems and get Free Shipping on orders over $99 at Speedway Motors, the Racing and Rodding Specialists. Ls Swap Fuel System On K1500 Stock Fuel System Gmt400 The Chevy Silverado 1500 Fuel Pump Wiring Diagram In A A low fuel pressure reading would confirm a weak fuel pump, low voltage to the fuel pump or a leaky fuel pressure regulator that does not allow the system to develop and hold normal fuel pressure. A point to keep in mind with any fuel system: unless there is a drain plug at the very bottom of the tank, if you should happen to pick up a tank of very bad This is a returnless system, so I have one line with that same kind of fitting under the hood, same type of tool, and you’d catch your gasoline. 3L Flex Fuel, 2011-2014 GMC Yukon XL 1500 5. This means fuel can suddenly discharge with force, even with the engine off, and injure your eyes. Joel Z. 3L Bolt FAST EZ-EFI technology onto your LS engine with a FAST EZ-EFI Engine + Manifold Kit. 7 & 6. - For use w/ returnless fuel system. 3L, so I posted up on the s10 forums, because turbo'd 4. Now you can c Holley In-Tank RetroFit Fuel Module 525 LPH Returnless Style. Including our FAST EZ-EFI Fuel ECU and Multiport Harness, an LSXRT manifold, Big Mouth Throttle Body, billet fuel rails, Precision Flow fuel injectors, inline fuel pump and an XIM ignition control system, this is the most complete EFI induction solution for your LS project. It is probably one of the most effective ways to help prevent vapor lock when running a carburetor. A TBI pump may have a normal current draw as low as 3 to 5 amps, with PFI pumps pulling 4 to 6 amps on average. Chevy Silverado 4. Returnless Fuel Injection with Stainless Steel Fuel Rail The 6. 8L, 2011-2014 GMC Yukon 4. The V6’s fuel rail required a “loop” for the fuel to flow in. Fuel pressure on some models can reach up to 60 psi (414 kPa). A new throttle cable bracket will be needed, which we have available for purchase here. Returnless fuel systems have been far better for the consumer, most pumpslast much more that 100000 miles. In 2004, truck engines went to a single 3/8" supply line, with NO RETURN LINE (returnless) except 5. 3L 2005, Tahoe 5. GM's newest and most potent engine platform is the Gen5 Engine found in V8 vehicles from 2014 and newer. Return style systems hold a big advantage in that with a vacuum/boost referenced fuel pressure regulator, the system can maintain a CONSTANT effective fuel pressure, which Edelbrock part #15775 is a supplemental fuel system containing a replacement fuel pump, fuel level sender and regulator hardware. The higher the pulse width signal, the higher I retrieve 2 "system lean" codes and a P069E "Fuel pump module has requested M. Vehicle Applications: 2014 Chevrolet Express 1500 Base Standard Cargo Van 3-Door 4. A liquid fuel pressure sensor provides fuel pressure feedback to the FPCM. A fuel pressure regulator is used to control the pressure which can be located inside the fuel pump or externally on the fuel rail. • Description: This supplemental fuel kit contains a replacement fuel pump with fuel level sender and a quick connect fitting. Showing all 5 results. ÷ 1. Chevrolet Silverado Headlight Wiring Diagram Ricks Free Auto Fuel line disconnect tool. electronic throttle control. It's using the regulator to maintain roughly 52-58psi of fuel pressure. Silverado 4000 Outboard Fuel Line; Fire-Acol Fuel Fill Hose; Fire-Acol 15 Low Permeation Fuel Hose; Fire-Acol Fuel Vent Hose; Sanitation System. 3L V6 Vortec LU3 is an engine produced by General Motors for use in full-size light-duty pickup truck and vans. Fuel shut off: 6000 rpm. For use with returnless fuel system. It slowly lost pressure to nothing. 6L twin-turbo. This standard was developed to promote common, reliable connections across the auto industry and streamline regulatory oversight. Does a 2004 GMC Sierra have a fuel filter? If it's a late model 2004+, there is no fuel filter. All that you need to add is your fuel line. 8, 5. These systems can be used as a return or returnless system with the use of the built-in regulator. 4L DOHC engine. 6. 2. MSRP $109. 1. 0L Poor Idle Quality, Cuts out, Misfire, MIL Lamp on FI / Returnless fuel system : Emissions: OBD-II Compliant: Symptoms The fuel pump delivers more fuel than the engine needs. Underhoodservice. That’s why Walbro high-performance fuel pumps and modules are developed and built specifically to meet the demands of today’s high-pressure and high-flow engines with efficient and durable performance. I have made swap and put in my car 2,7T (instad 3,0), so I had to change the fuel system as well (the 2,7 has a FPR on engine). Cylinder head: cast aluminum It has been this way since the introduction of the high pressure returnless fuel system. Chevy GM Truck/SUV Procharger 4. For Carburetors, this is between 4-7. Whether you are a drag racer or road racer, supplying the needed fuel to your engine with the right pressure, and volume, is crucial to achieving the Automotive and Powersports OEM and Performance Fuel Pumps and Fuel System Components. ) The rising rate regulators fit into the fuel system after the stock regulator, and in series with it. 03-14-07 08:38 AM - Post# 1119459 Anyone change a fuel filter on a 2004, 1500 Silverado? I haven't looked but I heard it is in the fuel tank now with the pump? I'm planning a Sniper EFI install for my '69 Nova. 3L engines * Stringent validation and durability testing throughout development process The Vortec Gen IV V-8 family delivers balanced performance and efficiency through technical innovation, said Christopher Meagher, assistant chief engineer. Unfortunately, due to the diaphragm style sensor used with the Tinted Series Gauges, a returnless fuel system can put excessive wear on the sensor causing them to fail prematurely. 3L P-1SC Supercharger HO System Kit 99-03 Chevy GM Truck/SUV Procharger i-1 Programmable Supercharger Stage II System Kit 2002 Silverado 1500 2002 Chevrolet Silverado 1500 RED PROCHARGED STEPSIDE! Emissions are controlled by a close-coupled catalytic converter, Quick Sync 58X ignition, returnless fuel rail, fast-response O 2 sensor. All LT-series engines are direct-injection, meaning the fuel is pressurized WAL-F90000267-GM, Genuine Walbro/TI Automotive F90000267 450LPH E85 Compatible Intank Fuel Pump + QFS Install Kit & Flex Hose for Chevrolet Silverado 1500 4. The included fuel system places a 340LPH fuel pump in the tank, which can easily be accomplished with basic hand tools. Cadillac Escalade ESV. 04-18-2016 09:37 PM by rednekferlife101. 8L, 2011-2014 GMC Yukon 5. A returnless type fuel system consists of only a fuel pump with a voltage regulator, a fuel supply line, and finally ends up in the fuel rail. The fuel line carries the fuel from the fuel tank to the fuel injection system in your vehicle. 。 OE part number: GF822, 10299146, 19239926, 33737, TBSS intake, NNBS Intake 。 1 Year Unlimited-mileage Quality Guarantee 。 Description: 。 C5 Corvette Fuel Pressure Regulator/Filter Kit- EFI or LS Swap w/ 6AN fittings This filter/regulator assembly is commonly used when adapting return style fuel systems for use with returnless Unleash the true potential of your GM Truck/2500 SUV with Magnuson’s TVS1900 Radix Supercharger System Available for the 2004-2007 GM Trucks and 2500 SUVs, this bolt on supercharger is designed to deliver maximum performance while retaining factory-like drivability and reliability. This is a returnless fuel system. Any fuel which is released from the valve is passed through the fuel return line back to the tank. This will include an extra quick disconnect fitting and cap for the return port on the fuel rail. The fuel pressure regulator is a diaphragm-operated relief valve. Bolt FAST EZ-EFI technology onto your LS engine with a FAST EZ-EFI Engine Kit. 0L 2004-2009 at Walmart. 25 lph. Price includes refundable $75 core deposit (does not apply to rebuild & return service) Rebuild & Return Service Available for 4. 00 $ 1,350. 8 foot bed. highflowfuel. max 75%-85% for competing modules. Unlike the system we had in place for the V6, the Ecotec is a “returnless” design. 95 Estimated to ship directly from the manufacturer on 06/14/21 LS1 - return versus returnless fuel system Discussion in 'High Tech Retrofits' started by cdorhout, Mar 15, 2012. of torque (519 Nm), and later this year, a new 6. 0. Each kit is available for both return and returnless style fuel systems. 0 Ground Shaking Performance – Advanced Technology 15-gallon Racing Fuel Cell with 5. The return is closer to the tank reducing the fuel circuit reducing heat soak, fuel pressure from regulator forward is the same pressure, normally around 58psi. 1990-2010 Mustang Upgrades Dodge Performance Upgrades → 300C 5. Fuel pumps are usually advertised by their About Us. Fuel Injection will usually be between 35-65 psi. 3 liters in a V6 configuration, the LU3 served as the standard On a 2005 Chevy Silverado, for example, the on demand returnless EFI system has a turbine-style fuel pump inside the fuel tank that routes fuel through an in-tank filter to the in-tank regulator. The PCM disables the fuel pump relay within 2 seconds if ignition reference pulses cease to be detected and the ignition remains ON. Before proceeding, make sure your car is on the emergency brake and the engine is turned off, and you park the car on flat ground. What the P0172 code means P0172 indicates that there is too much gasoline being detected in the exhaust gases exiting the combustion chamber. 0 has. had problems starting in the pastso i came here. 3/8 inch tube inlet from pump 5/16 inch return port This kit In effect, the PWM system gives a large pump a dual personality: Slow it down for cruise and minimize heat generation, then speed it up for high fuel demand. 00 $ 899. Shopping Home. I added the line for fuel return and connected it as it is below (picture 4. Use the Corvette fuel filter/regulator and put that within a few feet of your fuel cell. Apr 25, 2021 - SNIPER TBI MASTER KIT - GOLD Engines: Returnless Fuel Injection Systems. 7L, 3. Fuel pressure of a returnless type fuel system is 55-62 PSI at all times. Step One I own a 99 silverado,5. For 2004 • “Returnless Fuel System,” elimination of fuel return line on all gas models except 4. This page is about Fuel Return Line Diagram,contains 34 12 Valve Cummins Fuel System Diagram,2010+ Shelby GT500 Return Style Fuel System PLUS 1000+hp ,Need ryobi 725r fuel line diagram,Diesel Bombers and more Wix 33737 Corvette style filter/regulator (and fuel return plumbed back into the factory/stock fuel lines, through the switch valve), lastly to the 2005 returnless the fuel rail inlet. The pump then constantly is pushing fuel up line at a given pressure based on the strength of the pump. the newer high-pressure pumps work great on the stock fuel system. While testing will need to be performed to verify the failure, Condition: New: Brand: Standard: Part Name: Fuel Injector: Fit: Direct Fit: Superseded Part Number: 2007 2006 2005 2004 2003 2002 2001 2000 1999 1998 1997 1996, Chevrolet Chevy K1500 C1500 S10 GMC Sierra 1500 Blazer Savana, 2500 Astro Sonoma Safari Oldsmobile Bravada P30 Jimmy Isuzu, Hombre P3500 Express Silverado With Returnless System, With Fuel Return Line Standard Cargo Van Extended Cargo 2000 - 2006 Chevy Silverado/GMC Sierra Installation; 1999 - 2007 Ford Super Duty Power Stroke Installation; 1992 - 1997 Ford F-Series Installation; Use: May be used with return or returnless fuel systems, including PWM (pulse modulated systems) Fuel Types: Compatible with gasoline or E85, although E85 may shorten lifespan (but will not void warranty) OUR GUARANTEE: Every Quantum fuel pump is backed by a comprehensive Lifetime Warranty. Since then, Bosch has stood at the forefront of fuel system technology, providing fuel pumps to virtually all vehicle manufacturers. Does this fuel pump fit a 2004 Chevy Silverado crew cab? July 9, 2020. 3L V-8 certified at 355 horsepower (250 kW) and 383 lb. Sometimes the problem is minor, and at times, it can be huge. Some vehicles are equipped with a returnless fuel supply, this means that the fuel pump is pulse width modulated and can vary in pump speed to deliver fuel to the rail at a variable rate instead of constantly running the fuel pump and regulating the pressure with a pressure regulator, returning fuel back to the tank. I'm about to order another fuel pump. On a 2005 Chevy Silverado, for example, the on demand returnless EFI system has a turbine-style fuel pump inside the fuel tank that routes fuel through an in-tank filter to the in-tank regulator Wix 33737 Corvette style filter/regulator (and fuel return plumbed back into the factory/stock fuel lines, through the switch valve), lastly to the 2005 returnless the fuel rail inlet. FUEL PUMPS & ACCESSORIES; 2007-2009 Chevrolet Silverado 2500HD, 3500HD Returnless Fuel Injection with Stainless Steel Fuel Rail; 2004 Chevrolet Silverado fuel system problems with 31 complaints from Silverado owners. My plan to clean the fuel injectors on my 2008 Silverado LS 4. Shop for GP Sorensen Fuel Pressure Regulator 800-329 with confidence at AutoZone. Non flex went returnless in 04. A fuel-pressure gauge connects with an adapter, in the fuel line. Do not remove the stock regulator, as it still controls the fuel flow under most manifold vacuum conditions. The engine is equipped with a returnless fuel rail and 78. Make sure the fuel hose you use between the pump and the engine is rated for at least 60 psi or 4. Reducing the internal Some returnless fuel pressure systems use a fuel pump driver module or fuel pump control unit. 3L, 4. 3, 6. Reconnect the fuel filler hose to the fuel tank inlet. You will require a fuel pressure gauge to do the test. 3 in. So visually inspect. Fuel pressure is controlled by varying the speed of the fuel pump motor. customer rating. Set includes: 1 supply line 3/8", 1 return line 5/16", and hoses to sending unit connections. 3's are a lot more common there. Gas, 6 1/2 foot bed, 2500 with crew cab. The fuel system is an electronic returnless on-demand design that reduces the internal temperature of the fuel tank by not returning hot fuel from the engine to the fuel tank for lower evaporative emissions. The 99-04 Corvettes with LSx's used this filter, since they use a returnless fuel rail. It has a fuel filter and pressure regulator build internal to the modular assembly. CHEVROLET > 2006 > SILVERADO 1500 > 4. A single line simply supplies fuel at the required pressure to the injector rail. Followed by the 2 straps holding the tank in place. Gasoline engines. 1999-07 GM Silverado/Sierra; Aeromotive Phantom EFI Returnless In-Tank Kit 18329 Aeromotive Phantom 200 Stealth Fuel System 18689. 3L Long story short, I'm planning a remote turbo setup on my 4. They went returnless in 2004 (except the Express, Trailblazer, and Envoy). Is this a pressure relief valve? The fuel pressure regulator controls the fuel pressure in your Ford’s fuel system, maintaining the proper pressure needed for your vehicle to run optimally. 6 = 156. 79: $0. 0 mm electronic (Drive-by-Wire) throttle. They went returnless in 2005 and had 58 psi rail pressure. It was launched in the all-new 2014 Chevrolet Silverado 1500 and 2014 GMC Sierra 1500. 98mm turbo, nitrous, 428LSX, Rossler 80E with a brake. Outside the tank, the lines continue with -8 AN braided hose feeding a Corvette combo filter/regulator running to the factory fuel rails. Classic Industries offers a wide selection of 1987 Chevrolet Truck parts, including 1987 Chevrolet Truck interior parts and soft trim, 1987 Chevrolet Truck exterior sheet metal, 1987 Chevrolet Truck moldings, 1987 Chevrolet Truck emblems, 1987 Chevrolet Truck weatherstrip and unique accessories, to nearly every nut and bolt needed for installation. 2-piece screw together fittings at the fuel rail and regulator provide extra protection over the old plastic clip design. The 1999 Mazda Miata is a returnless fuel Walbro performance fuel systems are designed to deliver the speed, power, torque and reliability you expect. htmlReturnless Fuel Pressure & Volume Quick-FixModern automotive fuel delivery The fuel system uses the stock Mustang tank with a 2003 Ford F350 in-tank fuel pump and module. New Product! GM-Specific plug n play installation kit for the Walbro F90000267 450LPH fuel pump for 2004+ GM returnless fuel systems. This means that the fuel pump adjusts the pressure going to the fuel rail based on the demands of the vehicle, therefore eliminating the need for a return line. You can also send emails to [email protected] for any clarification regarding the car parts. 8L / 5. 0L 2004-2009 No vacuum line inside the fuel tank . The reasons fuel injectors fail vary, but here are five of the most common problems with fuel injectors. Both major versions of this idea are designed to prolong pump life and reduce pump noise. When the engine is shut down, residual oil pressure keeps the fuel pump running for a few seconds. If fuel becomes trapped in the line your tank will then build pressure or vacuum until there is enough pressure to purge the vent which will cause gas and/or odor to come from the vent line. If you are going the injected route, you will My fuel rail got changed to returnless but I do run a short length of return at the tank. Bring your vehicle’s fuel system back to its top shape with this top-notch part. This is the same fuel cell design used in the Ford Cobra Jet, Chevy COPO Camaro and many of the MOPAR Drag That is only on flex fuel. There should be no smoke coming out from the hood. 2001 Stratus has a fuel leak. Silverado, sierra. Fuel Pump Assemblies . Hoping (1) 1 product ratings - For 2010-2017 Chevrolet GM V8 4. 2005 chevy silverado fuel line diagram. While the engine is running, the fuel pressure should drop about 5 psi, from the static prime pressure (DPI) then snap the throttle, the fuel system pressure should jump up about 5 psi. 5. Pump P/N is ACDELCO MU1419 or Delphi FG0353. 2L V-8. evaporative system. 3L V-6 SAE-certified at 285 horsepower (212 kW) and 305 lb. Chevrolet Silverado 1500 Questions Cargurus. GB REMANUFACTURING . This is the same fuel cell design used in the Ford Cobra Jet, Chevy COPO Camaro and many of the MOPAR Drag 2020 F250 - 7. Newer (returnless) fuel systems have the regulator at the fuel pump and the pump only sends the needed amount. ), then make microchip tuning (must be about 300 HP). Concorde Fuel Available in return and returnless versions, they convert your factory tank or fuel cell to an in-tank EFI fuel s Holley/MSD is pleased to announce the release of Are you interested in an EFI retrofit kit, but just can't get past the complication of the fuel system? Holley is proud to introduce their Universal In-Tank Retrofit Fuel Modules! Available in return and returnless versions, you can rest assured Holley has the solution you need for your EFI fuel pump woes. Electronic Returnless Fuel System Fault Classic Industries offers a wide selection of Chevrolet Truck parts, including Chevrolet Truck interior parts and soft trim, Chevrolet Truck exterior sheet metal, Chevrolet Truck moldings, Chevrolet Truck emblems, Chevrolet Truck weatherstrip and unique accessories, to nearly every nut and bolt needed for installation. If you have an 04 or newer engine and your horsepower goal is under 500 hp , the simplest way to set up your system is to buy a 225 lph Walbro in tank pump and go with the corvette filter / regulator. Return style systems will bleed excess fuel back to the tank through the regulator. The low fuel light works on a system in tandem with the fuel pump. I changed the full pressure regulater and it was fine. In 2004 GM changed the fuel system to a returnless style. Some vehicles are equipped with a returnless fuel supply. -'04+ models have a returnless fuel system-'05+ had an optional sunroof-'05+ had an optional no frills cloth interior-'03-'04 had optional digital HVAC, standard from '05 on-RWD models have a 2 piece steel driveshaft, AWD models have an alluminum rear drive shaft-933 unit Intimidator appearance package available in '06 The L8B is a powertrain system produced by General Motors for use in pickup trucks and SUVs. There are many articles out there that go in full detail on all the different kinds of regulators and fuel systems. This guide is for you. The fuel pressure regulator is a part of the fuel sender assembly, eliminating the need for a return pipe from the engine. The HIL Fuel System Rig and a Chevrolet Silverado truck were used to collect and analyze the fuel system behavior under different fault conditions. So I check the main menu & hmmm -NO Mention of a fuel pump control module in the list of available modules (Solus Pro w/ 13. The 2006-09 factory returnless fuel system design is limited to approximately 150 L/hr (approximately 425 BHP gasoline or 280 BHP E85 at the engine, 10-15% less at the wheels) of fuel flow even when the in-tank fuel pump is upgraded. The specifications are for a new engine. This engine used a sequential fuel injection system and “Coil-Near-Plugs” ignition system with a composite distributor and pressurized lubricating system with a wet sump. I. Recommended fuel: regular unleaded or E85: Maximum engine speed (rpm): 5800: Emissions controls: close-coupled catalytic converter, Quick Sync 58X ignition, returnless fuel rail, fast-response O2 sensor: Estimated fuel economy: 2WD (City / Hwy): 16 / 23: 4WD (City / Hwy): 16 / 22 With the fuel mileage savings of the hybrid system and Silverado's 26-gallon (98-liter) fuel tank, the Silverado Hybrid has a cruising range of more than 500 miles – enough to drive from San Is there such thing as a returnless style truck fuel rail? If there is, i cant seem to find one. Returnless systems have an advantage over the older systems in terms of the reduction of evaporative emissions because the fuel is subject to less agitation and heating. Car made 590whp on 8-9 psi on 91 pump. Walbro 450 overpowering my stock fuel pressure regulator in a 2005 sierra denali. com Walker Products began supplying the fuel system needs of the automotive industry in 1946. 3L L59 Flex Fuel vehicles. 5 out of 5 stars 303 $11. hey guys figured out why the fuel was heating up so much so hears the deal, fuel system goes from stock pump to surge tank, (8l surge) then 2x 044 pumps go to the fuel reg and then to the fuel rails. Please let us know if you Many new Aeromotive Fuel Rails are now available as a fuel rail only kit, with high-flow fuel rail(s) and mounting hardware, or as complete bolt-on fuel rail systems. Bosch supplied the industry’s first fuel injection system with a high pressure electric fuel pump in 1967. Returnless fuel systems were mandated by the EPA to reduce vapor emissions an started in around 1997. Independent, accurate yield data and other harvest results. 3 LS engine nippondenso -cloggerama on a deadhead -returnless system - if you get contaminated fuel , it builds up around #7 injector The GMT800 trucks are pretty damn solid, across most of the years there were very little changes, except for some updates that came with the 03+ model cosmetic refresh, like Drive By Wire throttle, returnless fuel system and synthetic front diff fluid. Walbro # Walbro F90000267-GM - Walbro F90000267 450LPH E85/Gasoline Compatible Fuel pump Chevrolet Silverado 1500 2004-2007 - <p style="color: rgb Equip cars, trucks & SUVs with 2006 Chevrolet Silverado 1500 Fuel Injector from AutoZone. MyLink and OnStar with 4G LTE. Regular price $937. Fuel Pump For Returnless Fuel Systems: #15775 Kit includes the following: A returnless system does just as the name implies and doesn’t return fuel to the tank. With v-series. Retrofit Fuel Module 525 LPH-Returnless Style; The low profile design is only 1. 2006 FWD Northstar 55-61 psi (Returnless System NO PSI drop when running) Note: returnless system. 3L Flex Fuel, 2011-2014 Ch This resulted in 6 fuel injectors on the engine, one for each intake port. The electric turbine-style fuel pump attaches to the fuel tank fuel pump module inside the fuel tank. I put fuel pressure tester on it and turned key on, engine off and pressure read 45psi. Carter fuel pumps deliver OE fit, form and function through a broad line of made in America pumps and accessories for the professional installer. 3L L59 iron block: 2002-2007 Chevy Silverado 1500 (VIN Option Z), flex-fuel 5. In a continuous fuel system, the fuel pressure regulator is typically mounted in the mopar used their pump to conform with their wierd fuel rail regulator. If mounted in the engine compartment, it must be mounted where it won't be near major sources of heat or where it can constantly remain wet. 3L OEM Delphi Set (8) Fuel Injector 12613411 Holley In-Tank RetroFit Fuel Module 525 LPH Returnless Style. 0L If vehicle is a return style fuel system use #350-15773, if vehicle has a returnless fuel system us #350-15775. 3L 1997-2004, Silverado 1500 5. Look at the IFR table in the 04 bin. I was going 65 mph when this happened. If your fuel rail is a LS1,LS3 or LS6, it has the fuel connection at the rail pointing towards the driver side. There are some early 2000's cars and trucks made for flex fuel that also use the regulator/filter (three pipe connections) filter other than the Vette. Today Walker is one of the largest, privately owned manufacturers of fuel system components and engine sensors, and has served the needs of the worldwide automotive aftermarket. 3L LM4 aluminum block: 2003-2004 GMC Envoy XL (VIN Option P), ACE choice for Discovery LS Kit. See full list on onallcylinders. You can also look at Long Term Fuel Trim (LTDT) and Short Trim Fuel Trim (STFT) values to see if the engine is running lean. 3 stayed on the frame rail a while longer, although I have seen an 05 V6 with the filter in the tank, some people claim to have an 06 on the rail. 1 supply line 38 1 return line 516 and hoses to sending unit connections. This promotes more efficient fuel consumption. Without flex fuel. A returnless system is deadheaded, there's no return line on the fuel rail. 3L 2007, Throttle Body Idle Air Control Motor by Standard®. Chevrolet Silverado ( w/ Vortec Max Performance Package ) Chevrolet Silverado SS. COVID-19 Update: All Orders Still Shipping Same Day if Ordered By 4 Testing the fuel pump, on the 1999-2006 V8 Chevrolet Silverado (Suburban, Tahoe) and GMC Sierra (Yukon, Yukon XL), isn't difficult at all. Then you’d do your work, replace your rail, your injectors back here. Low Performance Pull it out and inspect it for signs of failure. Fuel pressure for the VIN Z 5. 2L is equipped with a “returnless’’ fuel injection system, also known as a demand system. Patent No. There are those who believe it’s best to place a fuel pressure regulator close to the fuel’s destination (fuel rail, fuel log, carburetor, diesel or direct injection pump), while others feel it’s just fine to place it further away; sometimes at the opposite end of the vehicle. Quick view Compare . 2L 1997-2000 4. Make sure all clamps are tight. 25 in. http://www. The fuel injector atomizes the fuel with the air entering the engine cylinder to form a combustible mixture. Coupe, 3. The tank is used along with the twin pumps. ) Here's what I have so far: Custom gas tank with 3/8" NPT inlet and outlet; Walbro 255 GSL392 external fuel pump; WIX 33737 (Corvette) filter/FPR 2013 Silverado 2500 6. e. These engines are different from the LS platform in that the Gen 5 is Direct Injected and operates off an updated engine and electrical platform. The returnless fuel injection system is better for evaporative emissions control. The following year (2004) made the switch to a returnless fuel system; Chrome wheels didn’t become available until 2004 (standard on 2005+) It doedn't have anything to do with the engine size, it's the year. The 4. RockAuto ships auto parts and body parts from over 300 manufacturers to customers' doors worldwide, all at warehouse prices. The worst complaints are faulty sensor on fuel tank, fuel pump shorts out, and difficulties with filling gas 5. positive crankcase ventilation. $191. Several data-driven classifiers, such as support vector machines, K-nearest Neighbor, Discriminant analysis, Bayes classifier, Partial- least squares, Quadratic and Linear classifiers, were 2003-2007 Silverado / Sierra 1500 4. Sale! On 3 Performance 2018 – 2020 F-150 5. Including our FAST EZ-EFI Fuel ECU and Multiport Harness, inline fuel pump, an XIM ignition control and TCU tranmission controller, this is the most complete EFI induction solution for your LS project. The leak is coming from under a "hat looking device" attached to the top middle of the fuel rail. All of the 03 or 04 and up 4. 09-23-2020 11:46 AM 2001 Silverado turbo fuel system setup. ) Detailed Reconditioning Procedure: Spider Injector Body is Disassembled and Ultrasonically Cleaned - Stripped of old parts; Fuel line In / return Orings are replaced with new viton Orings Considering this, where is the fuel filter located on a 2004 Chevy Silverado 2500hd? The fuel filter is contained in the fuel sender assembly inside the fuel tank. If your fuel rail has 2 ports, select "return" under options below when ordering. 5015 Galley rd . Truck Return Fuel System Upgrade. A software bias compensates the injector on-time because the fuel pressure regulator is not referenced to manifold That system "assumes" that you have a high volume fuel pump that produces well over the 7 psi that is the most fuel pressure that carburetors can handle (most carbs are rated from 5 to 7 psi). FUEL PUMP, RETURNLESS: Fuel Injector Kits - FREE DELIVERY possible on eligible purchases,Buy NEW HOLLEY SNIPER EFI MASTER KIT, 800 CFM, SHINY, 4BBL, FUEL INJECTION CONVERSION, MODULE, Visit our online shop products at discount prices Savings and offers available Fast FREE Shipping With our 100% satisfaction guarantee. We understand the design and manufacturing requirements to make the most effective, capable, and reliable fuel systems and components for the aftermarket motorsports industry. In fuel injection systems, the fuel pump builds pressure to supply injectors with fuel, but the pump supplies consistent pressure that isn't always right from the engine injectors. I can get you the part number later today if you need it. If the fuse is blown, it will be broken or burned. FUEL SYSTEM INFORMATION. The system is based around the 5. 00 Select '05 Silverado will not have a return line on the fuel rail. Add to cart * $ Category: Fuel If you've tried to find the fuel pressure regulator on many late-model engines by looking in the engine compartment, you won't find it there because the regulator has been relocated to the fuel tank. OBD II fault code P069E is a generic code that is defined as “Fuel Pump Control Module Requested MIL Illumination”, and is set when the PCM receives a request from the Fuel Control Module to illuminate a warning light because a fault has occurred somewhere in the fuel system. In other words, the one pipe you see that is all by itself on the cover feeds fuel under pressure to a fuel rail under high pressure (50 psi plus). 3L L33 aluminum block: 2005-2007 Chevy Silverado 1500 (VIN Option B), high-output, costs more ACE Returnless Twin Walbro 450 Fuel System $ 1,500. 1 in. FL708-B1C $166. 6 lbs. Some returnless modules also feature a fuel tank pressure sensor, which monitors pressure for the on-board EVAP system self-diagnostics, as well as serves as input for the PCM to vary fuel pump speed. 95 Edelbrock E-Force Supplemental Fuel Pump Kit, 2007-09 GM Silverado/Sierra Crew & Ext Cab 4. 8L 5. 55's - BAKFlip MX4 2005 Grand Marquis GS 2003 Marauder - Trilogy # 8, JLT, kooks, 2. With a broad range of body styles and proven, fuel-efficient powertrains, the 2013 Silverado 1500 now available at Crotty Chevrolet Buick in Corry, PA, can tackle just about any job a truck owner can imagine – from hauling equipment and a crew to a job site to towing a camper for a family vacation. Available in return and returnless versions, these 340 lph pumps are easy to install with basic hand tools and require no FUEL SYSTEMS - For things such Returnless fuel system. GAS. ). This system is widely used from before 1988 until 1994. Carter is a leading manufacturer of complete fuel system solutions for industrial, off-road, marine, agriculture, automotive, RV and commercial vehicle markets. It has been this way since the introduction of the high pressure returnless fuel system. * Returnless fuel system * E85 fuel capability on some 5. - V6 Eng. Buy Genuine Walbro F90000267 450LPH E85/Gasoline Compatible Fuel Pump Chevrolet Silverado 1500 4. 00 Quantum Fuel Systems. Ghoneim 2 , Mark Howell 2 , and Mutasim Salman 2 The Vortec 6. can anyone give me a punchlist to check?new battery starter fuel filter,air filter the basics have been addressed. I have monitored much more consistant fuel pressure on the stock regulator & the walbro 255. 2). /hr. P171 and P174 codes lean left and lean right bank. GM Part Numbers 25379923, 25358782. silverado returnless fuel system