LEMON Manuals: Even more car manuals for everyone
Home >> Buick >> 2007 >> Lucerne CX >> Repair and Diagnosis >> External Pages >> Different car >> Section 186 (Engine Controls - 3.9L - Introduction (2 Of 2)) >> Repair Instructions >> Fuel Injector and Fuel Rail Replacement >> Installation Procedure

Installation Procedure

WARNING: This page is about a different car, the 2006 Pontiac Montana SV6, 2006 Chevrolet Uplander, and 2006 Buick Terraza. However, it is still accessible from the selected car via links, so may be relevant.
    IMPORTANT: DO NOT reuse the fuel injector O-ring seals. Install NEW O-ring seals during assembly.
    IMPORTANT: Ensure to use the correct part number when ordering the replacement fuel injectors.
    Fig 1: Identifying Fuel Injector Assembly Part Number Identification Stamp
    GM537308Courtesy of GENERAL MOTORS CORP.
  1. The fuel injector (1) is stamped with a part number identification (2).
    2. Fig 2: Exploded View Of Fuel Injector & Components
    GM537311Courtesy of GENERAL MOTORS CORP.
  2. Lubricate the NEW injector O-rings (2) with clean engine oil.
  3. Install the NEW fuel injector upper O-ring (2).
  4. Install the fuel injector (3) to the fuel rail, if required.
  5. Install the fuel injector retaining clip (1), if required.
    6. Fig 3: Identifying Fuel Rail
    GM1557674Courtesy of GENERAL MOTORS CORP.
    NOTE:
    • Use care when servicing the fuel system components, especially the fuel injector electrical connectors, the fuel injector tips and the injector O-rings. Plug the inlet and the outlet ports of the fuel rail in order to prevent contamination.
    • Do not use compressed air to clean the fuel rail assembly as this may damage the fuel rail components.
    • Do not immerse the fuel rail assembly in a solvent bath in order to prevent damage to the fuel rail assembly.
  6. Lubricate the NEW lower injector O-rings with clean engine oil.
  7. Install the fuel rail assembly (1) into the intake manifold. Tilt the fuel rail assembly slightly to install the injectors.
    8. NOTE: Refer to FASTENER NOTICE in Cautions and Notices.
  8. Install the fuel rail bolts.

    Tighten:   Tighten the nut to 10 Nm (89 lb in).

  9. Connect the CMP sensor electrical connector.
  10. Position the fuel injector harness connector bracket to the intake manifold.
  11. Install the fuel injector harness connector bracket bolt.

    Tighten:   Tighten the nut to 8 Nm (71 lb in).

  12. Install upper intake manifold. Refer to INTAKE MANIFOLD REPLACEMENT - UPPER .
  13. Connect any remaining electrical connectors.
  14. Connect the fuel feed pipe to the fuel rail. Refer to Metal Collar Quick Connect Fitting Service .
  15. Inspect for fuel leaks with the following procedure:
    1. Turn ON the ignition for 2 seconds.
    2. Turn OFF the ignition for 10 seconds.
    3. Turn ON the ignition.
    4. Inspect for fuel leaks.
scientia non olet · About LEMON Manuals