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Home >> GMC >> 1991 >> Value Van 7.4 N >> Repair and Diagnosis >> External Pages >> Different car >> Section 78 (Engine Controls - Remove/Install/Overhaul - 5.2L CNG) >> Fuel System >> Fuel Injector & Rails >> Removal & Installation

Removal & Installation

WARNING: This page is about a different car, the 1995 Dodge Ram Wagon, 1995 Dodge Ram Van, 1995 Dodge Pickup, and 1995 Dodge Dakota. However, it is still accessible from the selected car via links, so may be relevant.
  1. Remove engine cover. Release fuel system pressure. See FUEL SYSTEM PURGING . Disconnect fuel injector harness connector at each injector.
    CAUTION: Fuel injector harness connectors are numbered and MUST be reinstalled on correct injector.
  2. Remove throttle body. Refer to REMOVE/INSTALL/OVERHAUL - 5.2L GASOLINE article in the ENGINE PERFORMANCE section. Remove intake manifold-to-fuel rail retaining bolts. Remove A/C compressor support bracket.
  3. Disconnect harness connectors from fuel low-pressure sensor, fuel temperature sensor and low-pressure fuel shutoff solenoid. Disconnect fuel tube from low-pressure fuel shutoff solenoid. Fuel line to solenoid utilizes a copper washer.
  4. Remove low-pressure fuel shutoff solenoid support bracket. Remove fuel tube from rail. Remove fuel rail retaining bolts, and lift rail straight up and out of manifold using a rocking motion. To remove injector, remove clip retaining injector to fuel rail.
    CAUTION: To prevent fuel rail misalignment, install fuel tube before installing intake manifold-to-fuel rail retaining bolts.
  5. To install, reverse removal procedure. Clean all components thoroughly. Install NEW "O" rings (CNG type), and apply Parker O-Lube(R) to "O" rings as components are assembled.
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