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How do I remove a leaking fuel injector - 1987 Jeep Cherokee

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Depends! what motor do you have?

Posted on Sep 27, 2008

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Number one injector came loose in 2001 toyota avensis d4d, removed injector pipes, wiring on injectors and rocker cover, tightened down injector, rebuilt and is now down on power.


REPLACE THE FUEL INJECTOR CANT REBUILT IT.IF YOU REMOVE FUEL INJECTORS FUEL RAIL YOU HAVE TO REPLACE GROMMETS AND O RINGS ON ALL THE FUEL INJECTORS IF NOT YOU WILL HAVE A INTAKE LEAK AT THE OLD FUEL INJECTORS SEALS.REPLACE THE FUEL INJECTOR YOU REBUILT THEY HAVE TO BE REPLACED.

Mar 02, 2011 | Toyota Camry Cars & Trucks

2 Answers

I need to replace the #2 fuel injector. Is this something a layman such as I can accomplish?


You could do it, but remember gasoline is flammable and volatile and can be hazardous to work with: REMOVAL AND INSTALLATION 1.9L Engines
  1. Before servicing the vehicle, refer to the precautions in the beginning of this section.
  2. Properly relieve the fuel system pressure.
  3. Remove or disconnect the following:
    • Negative battery cable
    • Fuel rail
    • Fuel injector retaining clip off the injector
    • Fuel injector
    • Fuel injector O-rings and discard them Fig. 1: Fuel injector identification-1.9L engine 9306zg58.gif
    To install: NOTE: The SOHC and DOHC fuel injectors are not interchangeable. The injectors are identified by a color coded plastic ring near the bottom of the injector. The SOHC injector has a blue ring near the O-ring that mates to the intake manifold and the DOHC has a pink ring.
  4. Lubricate the new fuel injector O-ring with clean engine oil.
  5. Install or connect the following:
    • New O-ring seals on the fuel injector
    • Retaining clip to the fuel injector
    • Fuel injector to the fuel rail
    • Fuel rail
    • Negative battery cable
  6. Start the vehicle and check for leaks, repair if necessary.
2.2L and 3.0L Engines
  1. Before servicing the vehicle, refer to the precautions in the beginning of this section.
  2. Properly relieve the fuel system pressure.
  3. Remove or disconnect the following:
    • Negative battery cable
    • Fuel rail
    • Fuel injector retaining clip off the injector
    • Fuel injector
    • Fuel injector O-rings and discard them
Fig. 2: Remove the retainer clip from the fuel injector - 2.2L and 3.0L engines 9306zg59.gif
To install:
  1. Lubricate the new fuel injector O-ring with clean engine oil.
  2. Install or connect the following:
    • New O-ring seals on the fuel injector
    • Retaining clip to the fuel injector
    • Fuel injector to the fuel rail
    • Fuel rail
    • Negative battery cable
  3. Start the vehicle and check for leaks, repair if necessary.
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Feb 14, 2011 | 1999 Saturn SL

1 Answer

Gas line leaking by engine how do repair that?


Where is it leaking? If its at the fuel rail fuel pressure regulator you may need a new regulator if leaking on the metal part. If its leaking at the rail side its just the "O" ring. Relieve fuel pressure(push in valve under plastic cap right side beside alternator on rail. Remove the torx screw holding regulator bracket. Pry out and replace "O" ring, reassemble. If its not the regulator it may be a fuel injector, you need to remove the fuel rail and replace both the upper and lower injector "O" rings. This however needs the intake manifold removed to repair.

Jan 29, 2011 | 2002 Buick LeSabre

1 Answer

Replace fuel inj 2009 lincoln ls 3.9 eng


Check this procedure about V8 3.9L Fuel Injectors - Removal & Installation
  1. Before servicing the vehicle, please familiarize yourself with safety procedures.
  2. Relieve fuel system pressure.
  3. Remove or disconnect the following:
    Negative battery cable Engine appearance covers Fuel lines Fuel pressure regulator Fuel cross over elbow Fuel injector connectors Fuel injector clamping plates Fuel injectors
To install:
  1. Install or connect the following:
    Fuel injectors. Use new O-ring seals. Fuel injector clamping plates Fuel injector connectors Fuel cross over elbow Fuel pressure regulator Fuel lines Engine appearance covers Negative battery cable
  2. Start the engine and check for leaks.

  1. Before servicing the vehicle, please familiarize yourself with safety procedures.
  2. Disconnect the negative battery cable.
    CAUTION The engine appearance cover is equipped with a noise suppressor. If the noise suppressor becomes separated from the engine appearance cover it must be positioned on the intake manifold prior to installing the engine appearance cover.
  3. Remove the engine appearance cover and the noise suppressor, if detached.
  4. Remove the air cleaner outlet pipe.
  5. Release the fuel system pressure.
  6. Remove the four engine appearance cover mounting bracket nuts and the brackets.
  7. Disconnect the fuel pressure sensor electrical connector from the sensor.
  8. Disconnect the fuel pressure sensor vacuum connector from the sensor.
  9. Disconnect the eight fuel injector electrical connectors from the injectors.
  10. Disconnect the fuel temperature sensor electrical connector from the sensor.
  11. Disconnect the fuel supply tube retaining clip from the fuel injection supply manifold.
  12. Disconnect the fuel supply tube spring lock coupling.
  13. Remove the four bolts and the fuel injection supply manifold and fuel injectors as an assembly.
  14. Remove the fuel injectors from the fuel injection supply manifold.
    CAUTION Use O-ring seals that are made of special fuel-resistant material. Use of ordinary O-ring seals can cause the fuel system to leak. Do not reuse the O-ring seals.
  15. Remove and discard the 16 O-ring seals from the fuel injectors.

    zjlimited_467.jpg

    Fig. Exploded view of the fuel injector mounting-3.9L engine shown

To install:
  1. Lubricate the new fuel injector O-ring seals with clean engine oil before installing.
    CAUTION Use O-ring seals that are made of special fuel-resistant material. Use of ordinary O-rings can cause the fuel system to leak. Do not reuse the O-ring seals.
  2. Install sixteen new O-ring seals onto the fuel injectors. Lubricate the O-ring seals with clean engine oil prior to installation.
  3. Install the fuel injectors and clips onto the fuel rail.
  4. Install the fuel rail and injectors as an assembly. Tighten the fuel rail bolts to 89 inch lbs. (10 Nm).
  5. Install the remaining components in the reverse order of removal.

Keep us updated.

Jan 14, 2011 | 2002 Lincoln LS

1 Answer

Gas is leaking from my fuel rail (phlegm) on my number 5 fuel injector on my 1994 camaro


  • Park the Camaro on a flat, level surface and set the parking brake. Open the hood and secure it in place with the hood prop. Disconnect the negative battery cable.
  • Open the gas tank to relieve pressure on the fuel lines.
  • Remove the sight shield from the fuel injector with a socket wrench. Loosen the screws on the hose clamps and disconnect the fuel lines connected to the injectors. Keep a rag handy to catch any fuel that leaks.
  • Disconnect the vacuum hose and ignition coil wire, then unplug the electrical connectors. Remove the fuel injector mounting bolts, undo the retaining clips and remove the fuel injectors.
  • Put a thin coat of engine oil on the new fuel injector's O-ring. Place the O-ring in position, install the new fuel injectors and secure the retaining clips. Install the mounting bolts with a torque wrench set at seven pounds.
  • Plug the electrical connectors back into the fuel injectors. Reconnect the vacuum hose and ignition coil wire. Connect the fuel lines and tighten the hose clamps with a screwdriver to secure them in place. Bolt the sight shield in place with a socket wrench.
  • Place the gas cap back on. Reconnect the negative battery cable



  • Dec 06, 2010 | 1994 Chevrolet Camaro

    1 Answer

    I have fuel leaking from the fuel rail at the 2nd injector from the front. The leak seems to be coming from where the metal of the fuel rail conects to the plastic....


    Maybe an O-ring is leaking. Try a new injector that comes with an o-ring to be sure it's not the injector itself.
    Fuel Injector - for V8

    REMOVAL & INSTALLATION


    1. Before servicing the vehicle, refer to the precautions in the beginning of
      this section.
    2. Relieve fuel system pressure.
    3. Remove or disconnect the following:

      • Negative battery cable
      • Fuel rail
      • Fuel injector retaining clips
      • Fuel injectors

      To install:

    4. Install or connect the following:

      • Fuel injectors, using new O-rings
      • Fuel injector clips to the fuel rail
      • Fuel rail
      • Negative battery cable

    5. Start the vehicle and check for leaks, repair if necessary.

    Oct 30, 2010 | 2002 Jeep Grand Cherokee

    2 Answers

    After removing the fuel injectors and rail to remove the manifold, how do you reinstall the fuel injectors?


    the same way you took it apart. put a little grease around the rubber seals so they will slide in easier. just tap on the fuel rail while lightly tapping it into place.

    Mar 28, 2010 | 2002 Honda Passport

    1 Answer

    Changing fuel injectors


    here is the answer,follow these steps one by one please: (1)relieve fuel pressure by using a fuel pressure gauge that also has a bleeder valve on it (2)disconnect the negative battery terminal (3)remove the intake manifold service cover (4)remove air intact duct between the air cleaner housing and the throttle body gasket.also remove the throttle body spacer bolts,remove the spacer and remove thegasket.discard the old gaskets. (5)Disconnect the fuel supply and return lines from the fuel rail. 960Disconnect the vacuum hose from the fuel pressure regulator. (6)Remove the nut that attaches the fuel rail end-point bracket retainer. (7)Disconnect the electrical connectors form all 8 fuel injectors and set the fuel injector harness aside. (8)Remove the fuel rail mounting bolts. (9)Remove the fuel rail and the fuel injectors as a single assembly. (10)Remove the fuel injectors one by one,by flipping up the U-clip retainer then pulling the injector from the fuel rail. (11)Remove the old O-rings from the injectors and be sure to use new ones when installing the new injectors. (12)Also use a new gasket when installing the spacer,also use a new throttle body gasket.>>when finished start car and check for leaks.and you're done.

    Jun 21, 2008 | 2004 Ford F350

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