Question about 2002 Chevrolet Silverado 1500

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Fuel regulator/liquidlock engine how 2 repair

2002 chevrolet subburban

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  • Mark Egan May 11, 2010

    Please better describe the issues you are having.

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Pull the spark plugs out, to remove the fuel from the cylinders, I guess replace the Fuel Pressure Regulator, dont totally understand your question...

Posted on Aug 07, 2009

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Posted on Jan 02, 2017

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2 Answers

Where is my fuel pressure regulator? how to change it. 2006 chevrolet malibu lt 2.2l ecotec engine.


Most are located on the fuelrail with the injectors or built into the fuelpump assembly inside the fueltank.

Mar 05, 2016 | 2006 Chevrolet Malibu LT

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Where is the fuel pump pressure regulator located on a 2002 Chevrolet S-10 ZR2 blazer with a W engine code


you'll find it at the end of the fuel rail it looks like a little fuel filter but it has a vacuum line in the top

Oct 01, 2014 | 2002 Chevrolet S-10

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CHECK ENGINE LIGHT COMES ON??????? SMELL STRONG ODOR OF GASOLINE!!!!!!!!!!!!


Check the fuel pressure regulator.Pull the vacuum hose off of the fuel regulator and check for fuel inside hose.If you find fuel replace regulator.Also check map sensor for fuel.

May 23, 2011 | 2002 Chevrolet Avalanche

1 Answer

Overreving with no power and excessive gas consumption air filter cleaned map sensor replaced fuel pump and filter


usually caused by busted diaphram in fuel pressure regulator allowing fuel to be drawn thru regulator directly to intake manifold. Pull vacuum line off regulator, plug line with golf tee, start car and watch to see if gas comes out of regulator. If yes, turn off car, replace regulator. The regulator sits near the fuel rail on the top of the engine as shown below. I will paste replacement instructions below from autozone.com in case you need to replace the regulator. Please let me know if you have any questions.
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Removal & Installation

4.2L Engine

  1. Relieve the fuel system pressure.
  2. Remove the air cleaner outlet resonator.
  3. Disconnect the engine wiring harness from the retaining clips at the front of the engine.
  4. Disconnect the fuel pressure regulator vacuum line.
  5. Clean any dirt from the fuel pressure regulator and the surrounding area.
  6. Disconnect the fuel return pipe.
  7. Remove the fuel return pipe retainer.
  8. Remove the fuel pressure regulator retainer.
  9. Remove the fuel pressure regulator.
  10. Inspect the regulator filter screen for contamination. If contaminated, replace the fuel pressure regulator.

To install:
  1. Install the regulator filter.
  2. Install the new O-ring on the fuel pressure regulator.
  3. Lubricate the fuel pressure regulator O-ring with clean engine oil.
  4. Push the fuel pressure regulator into the regulator housing on the fuel rail.
  5. Install the fuel pressure regulator retainer. Tighten the regulator retainer screw to 71 inch lbs. (8 Nm).
  6. Install the fuel return pipe retainer. Tighten the return pipe retainer screw to 71 inch lbs. (8 Nm).
  7. Connect the fuel return pipe.
  8. Connect the fuel pressure regulator vacuum line.
  9. Connect the negative battery cable.
  10. Inspect for leaks:
    1. Turn ON the ignition for 2 seconds.
    2. Turn OFF the ignition for 10 seconds.
    3. Turn ON the ignition.
    4. Inspect for fuel leaks.

  11. Install the engine wiring harness into the retaining clips at the front of the engine.
  12. Install the air intake resonator.

Dec 08, 2010 | 2002 Chevrolet TrailBlazer

1 Answer

If i put a little gas in the carberator and fight with my blazer it will start and stay started, but if i leave it for awhile, it will turn over but not start. i cant figure out if it is electric or...


Get a fuel pressure gauge and connect it to the rail for the fuel injectors to read pressure.

If the pressure is too low, it might be a bad fuel pressure regulator or pump:

Fuel Pressure Regulator Removal & Installation 2.2L Engine To Remove:
  1. Relieve the pressure in the fuel system.
  2. Disconnect the negative battery cable.
  3. Disconnect the vacuum hose from the fuel pressure regulator.
  4. Remove the pressure regulator mounting screw.
  5. Remove the fuel pressure regulator assembly with O-ring. Inspect filter screen for contamination. If contaminated, remove and discard.
Fuel pressure regulator removal/installation (2.2L SFI engine) gm-05-22-619.gif

To Install:
  1. Apply clean engine oil to the new pressure regulator O-ring and install the O-ring on the regulator.
  2. Install the regulator on the fuel rail. Apply thread-locker to the mounting screw.
    • Tighten the screw to 106 lb in (12Nm).
  3. Connect the negative battery cable.
  4. Use the following procedure to pressurize the fuel system and check for leaks;
  5. Turn the ignition ON for 2 seconds.
  6. Turn the ignition OFF for 10 seconds.
  7. Turn the ignition switch back ON to run the fuel pump again and pressurize the fuel system.
  8. Check the fuel rail assembly for fuel leaks.
4.3L Engine RPO L35 To Remove:
4.3L (RPO L35) Fuel meter body assembly gm_trk_sil15_02-04_43_fuel_metr_body_assy.gif

  1. Before servicing the vehicle, refer to the Cautions and Warnings in the beginning of this section
  2. Remove or disconnect the following:
    • Upper intake manifold (See: Upper Intake Manifold)
    • Fuel pressure regulator retainer clip (M) and discard the clip
    • Regulator (N) from the housing by twisting and pulling the fuel pressure regulator (N) and using a shop towel to catch any spilled fuel
    • Regulator seal O-ring (R) and discard the O-ring seal
    • Regulator filter (Q) and discard the filter
    • Regulator seal O-ring (P) and discard the O-ring seal
    • Backup ring (O) and discard the ring
  3. Cover the fuel pressure regulator housing to prevent contamination from entering the fuel system
To Install:
4.3L (RPO L35) Fuel meter body assembly gm_trk_sil15_02-04_43_fuel_metr_body_assy.gif

  1. Lubricate the NEW O-ring seals with clean engine oil
  2. Assemble the following new parts to the fuel pressure regulator:
    • Backup ring (O)
    • Regulator seal O-ring (P)
    • Regulator filter (Q)
    • Regulator seal O-ring (R)
  3. Install or connect the following:
    • Fuel pressure regulator with the vacuum tube pointing down
    • Fuel pressure regulator retainer clip (M)
    • Upper manifold
  4. Test drive the vehicle to confirm the repairs
RPO LU3 To Remove:
4.3L (RPO LU3) Fuel meter body assembly gm_trk_sil15_02-04_43_rpolu3_fuel_metr_body_assy.gif

  1. Before servicing the vehicle, refer to the Cautions and Warnings in the beginning of this section
  2. Remove or disconnect the following:
    • Upper intake manifold
    • Fuel pressure regulator retainer clip (E)
    • Regulator (F) from the housing by twisting and pulling the fuel pressure regulator (F) while using a shop towel to catch any spilled fuel
    • Regulator seal O-ring (J) and discard the O-ring seal
    • Regulator filter (I) and discard the filter
    • Regulator seal O-ring (H) and discard the seal
    • Backup ring (G) and discard the backup ring
  3. Cover the fuel pressure regulator housing to prevent contamination from entering the fuel system
To Install:
4.3L (RPO LU3) Fuel meter body assembly gm_trk_sil15_02-04_43_rpolu3_fuel_metr_body_assy.gif

  1. Lubricate the NEW O-ring seals with clean engine oil.
  2. Assemble the following new parts to the fuel pressure regulator:
    • Backup ring (G)
    • Regulator seal O-ring (H)
    • Regulator filter (I)
    • Regulator seal O-ring (J)
  3. Install or connect the following:
    • Fuel pressure regulator (F) with the vacuum tube pointing down
    • Fuel pressure regulator retainer clip (E)
    • Upper intake manifold
  4. Test drive the vehicle to confirm the repairs
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Nov 04, 2010 | 2002 Chevrolet Blazer

2 Answers

How difficult is it to change fuel pressure sensor on a chevrolet 2003 2wd 2500hd?


Hi!!

The Fuel Pressure Regulator is screwed into the fuel injector rail and all you need is a 1/2 or 9/16 open wrench and unplug the electrical connection and the vacuum hose. If you already know that the regulator is defective, I suggest you buy the new one first so you know how it looks like.

Jun 07, 2010 | 2002 Chevrolet Silverado 2500HD

1 Answer

Smells of gas under engine hood


check for a bad fuel pressure regulator. a bad regulator can cause:hard starting, poor fuel economy, stalling, check engine light on and a gas smell under hood.

Jan 17, 2010 | 2002 Chevrolet Malibu

1 Answer

Replace fuel rail


check fuel inlet and return lines for leaks.also check for leaks at fuel pressure regulator and fuel injectors.

Dec 13, 2009 | 2002 Chevrolet Impala

1 Answer

Fuel injection problem


You did not mention if the engine was stalling or idling rough but if it is then the fuel pressure regulator could be bad. The regulator is connected to the intake manifold by a vacuum line. If the regulator fails then vacuum from the intake manifold will **** gas from the regulator directly into the engine.

Dec 04, 2008 | 2002 Chevrolet Blazer

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