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Home >> Isuzu >> 2007 >> Ascender 4WD >> Repair and Diagnosis >> Engine Performance >> System >> Engine Control System & Fuel System - 4.2L - Introduction (2 Of 2) >> Repair Instructions >> Fuel Rail Assembly Replacement >> Installation Procedure
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Installation Procedure

    Fig 1: Identifying Fuel Rail Assembly
    GM1483954Courtesy of GENERAL MOTORS CORP.
  1. Lubricate the new lower injector O-ring seals with clean engine oil.
  2. Install the new O-ring seals on the spray tip end of each injector.
    3. Fig 2: View Of Fuel Rail Assembly
    GM1482970Courtesy of GENERAL MOTORS CORP.
  3. Install the fuel rail assembly (1).
    4. NOTE: Refer to Fastener Notice .
  4. Apply a 5 mm (0.2 in) band of threadlock GM P/N 12345382 (Canadian P/N 10953489) or equivalent, to the threads of the fuel rail bolts (2).

    Install the fuel rail attaching bolts (2).

    Tighten:  Tighten the bolts to 10 N.m (89 lb in).

  5. Install the fuel injector harness in-line connector (3) to the rocker cover.
  6. Connect the fuel injector harness in-line connector (3) to the engine wire harness.
    7. Fig 3: View Of Fuel Feed Pipe & Fuel Rail
    GM1368526Courtesy of GENERAL MOTORS CORP.
  7. Connect the fuel feed pipe (3) to the fuel rail (2). Refer to Metal Collar Quick Connect Fitting Service .
  8. Connect the fuel injector electrical connectors.
  9. Install the intake manifold. Refer to Intake Manifold Replacement .
  10. Connect the negative battery cable. Refer to Battery Negative Cable Disconnection and Connection .
  11. Inspect for leaks.
    1. Turn ON the ignition, with the engine OFF for 2 seconds.
    2. Turn OFF the ignition for 10 seconds.
    3. Turn ON the ignition, with the engine OFF.
    4. Inspect for fuel leaks.
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