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Home >> Pontiac >> 2010 >> G6 Base, 2D Coupe >> Repair and Diagnosis >> Engine Performance >> Engine Control Systems >> Engine Control System & Fuel System - 2.4L - Repair Instructions >> Repair Instructions >> Fuel Injection Fuel Rail Assembly Replacement >> Removal Procedure
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Removal Procedure

    Fig 1: Fuel Feed Line Retainer, Quick Connect Fitting & EVAP Line Quick Connect Fitting
    GM1889920Courtesy of GENERAL MOTORS CORP.
  1. Relieve the fuel system pressure. Refer to Fuel Pressure Relief (With CH 48027)  or Fuel Pressure Relief (Without CH 48027) .
  2. Remove the air cleaner outlet duct. Refer to Air Cleaner Outlet Duct Replacement .
  3. Disconnect the fuel feed line quick connect fitting (3) from the fuel rail. Refer to Metal Collar Quick Connect Fitting Service .
    4. Fig 2: Fuel Injector Wiring Harness Electrical Connector & Clip
    GM1889723Courtesy of GENERAL MOTORS CORP.
  4. Disconnect the engine wiring harness electrical connector (3) from the fuel injector wiring harness electrical connector (4).
    5. Fig 3: Fuel Injector Wiring Harness Electrical Connector At MAP Sensor
    GM1889725Courtesy of GENERAL MOTORS CORP.
  5. Disconnect the fuel injector wiring harness electrical (1) from the manifold absolute pressure (MAP) sensor.
    6. Fig 4: Wiring Harness Clips & Fuel Rail Tabs
    GM1889953Courtesy of GENERAL MOTORS CORP.
  6. Remove the engine wiring harness clips (1) from the fuel rail tabs (2).
    7. Fig 5: Fuel Rail & Bolts
    GM1578472Courtesy of GENERAL MOTORS CORP.
  7. Remove the fuel rail bolts.
    8. NOTE: Use care when removing the fuel rail assembly in order to prevent damage to the fuel injector spray tips.
  8. Pull the fuel rail back and upward in order to release the fuel injectors from the cylinder head ports.
  9. Remove the fuel rail.
    10. Fig 6: Fuel Injector Tip Insulators
    GM1336272Courtesy of GENERAL MOTORS CORP.
    NOTE: The fuel injector tip insulators may be located on the injector or may still be located in the cylinder head. Either way, ensure that all 4 injector tip insulators are removed and discarded.
  10. Remove and discard the fuel injector tip insulators.
    11. Fig 7: Fuel Rail, Electrical Connectors & Injectors
    GM1683401Courtesy of GENERAL MOTORS CORP.
  11. Disconnect the fuel injector wiring harness electrical connectors from the fuel injectors.
  12. Remove the fuel injector wiring harness clips from the fuel rail.
  13. Remove the fuel injector wiring harness from the fuel rail.
  14. Remove the fuel injectors, if necessary. Refer to Fuel Injector Replacement .
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