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Home >> Pontiac >> 2007 >> G6 Base, 2.4 B >> Repair and Diagnosis >> Engine Performance >> System >> Engine Control System & Fuel System - 2.4L - Introduction (2 Of 2) >> Repair Instructions >> Fuel Rail Assembly Replacement >> Installation Procedure
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Installation Procedure

IMPORTANT: Install only NEW lower O-rings if the fuel rail and injectors were removed and re-installed. If the fuel rail was replaced, then install NEW upper and lower O-rings.
    Fig 1: View Of Fuel Rai & Injectors
    GM1683401Courtesy of GENERAL MOTORS CORP.
  1. Install the fuel injectors, if necessary. Refer to Fuel Injector Replacement .
  2. Install the fuel injector wiring harness clips to the fuel rail.
  3. Connect the fuel injector wiring harness electrical connectors to the fuel injectors.
    4. Fig 2: View Of Fuel Injector Tip Insulators
    GM1336272Courtesy of GENERAL MOTORS CORP.
  4. Lubricate the NEW fuel injector tip insulators with clean engine oil.
  5. Install the NEW fuel injector tip insulators to the cylinder head.
    6. Fig 3: Identifying Fuel Rail Bolts
    GM1578472Courtesy of GENERAL MOTORS CORP.
  6. Lubricate the fuel injector O-rings with clean engine oil.
  7. With the fuel injectors positioned downward, lower the fuel injectors into the cylinder head ports.
  8. Carefully push down on the fuel rail in order to insert the injectors into the cylinder head ports.
    NOTE: Refer to Fastener Notice .
  9. Install the fuel rail bolts.

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

    10. Fig 4: Locating Fuel Injector Wiring Harness Electrical Connectors
    GM1571760Courtesy of GENERAL MOTORS CORP.
  10. Connect the engine harness electrical connector (2) to the fuel injector wiring harness electrical connector (1).
  11. Install the fuel injector wiring harness electrical connector (1) clip to the intake manifold tab.
    12. Fig 5: Locating Electronic Throttle Control (ETC) Electrical Connector
    GM1578460Courtesy of GENERAL MOTORS CORP.
  12. Install the 2 engine harness clips to the fuel rail tabs.
  13. Connect the ETC electrical connector.
    14. Fig 6: View Of Fuel Feed Pipe Retainer & Fuel Pipe Bracket
    GM1683133Courtesy of GENERAL MOTORS CORP.
  14. Connect the fuel feed line (1) quick connect fitting to the fuel rail. Refer to Metal Collar Quick Connect Fitting Service .
  15. Install the air cleaner outlet duct. Refer to Air Cleaner Outlet Resonator Replacement .
  16. Connect the negative battery cable. Refer to Battery Negative Cable Disconnection and Connection .
  17. Inspect for fuel leaks using the following procedure:
    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.
    4. Inspect for fuel leaks.
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