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Home >> GMC >> 1998 >> Forward Control 7.4 B >> Repair and Diagnosis >> Engine Performance >> Remove, Overhaul & Install >> Engine Controls - Remove/Install/Overhaul - 7.4L >> Fuel System >> Fuel Rail & Injectors >> Removal

Fuel Rail & Injectors: Removal

  1. Relieve fuel pressure. See FUEL SYSTEM PRESSURE RELIEF  under FUEL SYSTEM. Disconnect negative battery cable. Remove upper intake manifold. See UPPER INTAKE MANIFOLD ASSEMBLY .
  2. Disconnect fuel supply and return lines at fuel rail. Disconnect main injector harness connector. Disconnect coolant temperature sensor harness connector. Remove fuel rail retaining bolts. Disassemble as necessary.
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