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Home >> GMC >> 1993 >> Forward Control 4.3 Z, Automatic >> Repair and Diagnosis >> External Pages >> Different car >> Section 61 (Engine Controls - Remove/Install/Overhaul - 5.9L Diesel) >> Fuel System >> Fuel Injector >> Removal

Fuel Injector: Removal

WARNING: This page is about a different car, the 1995 Dodge Pickup and 1995 Dodge Cab & Chassis. However, it is still accessible from the selected car via links, so may be relevant.
  1. Disconnect negative battery cables. Remove nameplate, located above rocker lever covers. Disconnect high-pressure fuel lines at fuel injector. It may be necessary to remove high-pressure fuel lines from fuel injection pump for access to fuel injector.
  2. If removing high-pressure fuel lines from fuel injection pump, mark high-pressure fuel line location for installation reference. Using wrench, hold delivery valve holder on fuel injection pump while removing high-pressure fuel line from fuel injection pump.
  3. Some types of fuel injectors may contain an "O" ring in the groove on top of fuel injector, just above fuel injector retaining nut. Remove "O" ring (if equipped).
  4. Remove fuel injector drain line-to-fuel injector banjo bolt and seal washer from each fuel injector and plug all fuel openings. Remove fuel injector drain line assembly retaining clamp at rear of cylinder head.
  5. Remove fuel injector drain line bolt with seal washers at fuel filter. See Figure. Ensure area around fuel injector is clean.
    CAUTION: If area around fuel injector retaining nut and fuel injector is rusty, fuel injector may rotate when removing fuel injector retaining nut. Fuel injector may be damaged if it rotates during removal of fuel injector retaining nut. Apply penetrating oil to fuel injector and retaining nut if rust exists before attempting fuel injector retaining nut removal.
  6. Spray area around fuel injector retaining nut and fuel injector with penetrating oil if rust exists. Using hammer and Brass drift, hit body of fuel injector to loosen fuel injector.
  7. Hold body of fuel injector with wrench while removing fuel injector retaining nut from cylinder head. Pull fuel injector from cylinder head. It may be necessary to use fuel injector puller to pull fuel injector from cylinder head. Remove Copper sealing ring (located below fuel injector) from cylinder head if it was not removed with fuel injector.
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