Equinox 2005-2007, Torrent 2006-07

Fuel Rail (Supply Manifold) & Injectors

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Removal & Installation




CAUTION
In order to reduce the risk of fire and personal injury that may result from a fuel leak, always install the fuel injector O-rings in the proper position. If the upper and lower O-rings are different colors (black and brown), be sure to install the black O-ring in the upper position and the brown O-ring in the lower position on the fuel injector. The O-rings are the same size but are made of different materials.


WARNING
When servicing the fuel rail assembly, precautions must be taken to prevent dirt and other contaminants from entering the fuel passages. It is recommended that the fittings be capped, and the holes be plugged during servicing.

  1. Properly relieve the fuel system pressure.
  2.  
  3. Remove the upper intake manifold. For additional information, refer to the following section, -Intake Manifold, Removal & Installation.-
  4.  
  5. Disconnect the engine fuel feed pipe at the fuel rail.
  6.  
  7. Disconnect the main fuel injector harness electrical connector.
  8.  
  9. Disconnect the coolant temperature sensor and camshaft position sensor electrical connectors
  10.  
  11. Disconnect the electrical connectors from the fuel injectors.

    Click image to see an enlarged view

    Fig. Disconnect the fuel supply pipe (1) at the fuel rail (4).



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    Fig. Fuel rail assembly



    Click image to see an enlarged view

    Fig. Fuel injector parts

  12.  
  13. Remove the fuel rail retaining bolts.
  14.  
  15. Remove the fuel rail assembly.
  16.  
  17. Remove the injector O-ring seal from the spray tip end of each injector.
  18.  
  19. Remove the fuel injector retaining clip.
  20.  
  21. Remove the fuel injector from the fuel rail.
  22.  
  23. Remove the fuel injector upper O-ring.
  24.  
  25. Remove the fuel injector lower O-ring.
  26.  

To install:

  1. Install the fuel injector upper O-ring.
  2.  
  3. Install the fuel injector lower O-ring.
  4.  
  5. Lubricate the fuel injector upper O-ring using GM P/N 12345616 (Canadian P/N 993182).
  6.  
  7. Install the fuel injector to the fuel rail.
  8.  
  9. Install the fuel injector retaining clip.
  10.  
  11. Lubricate the fuel injector O-rings using GM P/N 12345616, (Canadian P/N 993182)
  12.  
  13. Install the fuel injector nozzles into the lower intake manifold injector bores.
  14.  
  15. Press on the fuel rail using the palms of both hands until the fuel injectors are fully seated.
  16.  
  17. Install the fuel rail attaching bolts. Tighten the bolt to 10 Nm (89 inch lbs.).
  18.  
  19. Install the injector electrical harness to the fuel rail.
  20.  
  21. Apply lubricant to the fuel injector electrical connectors; GM P/N 12377900, (Canadian P/N 10953529).
  22.  
  23. Connect the fuel injector electrical connectors.
  24.  
  25. Connect the coolant temperature sensor and camshaft position sensor electrical connectors
  26.  
  27. Connect the main fuel injector electrical harness connector.
  28.  
  29. Connect the fuel feed pipe at the fuel rail.
  30.  
  31. Install the upper intake manifold.
  32.  
  33. Connect the negative battery cable.
  34.  
  35. Inspect for fuel leaks.
    1. Turn ON the ignition for 2 seconds.
    2.  
    3. Turn OFF the ignition for 10 seconds.
    4.  
    5. Turn ON the ignition.
    6.  
    7. Inspect for fuel leaks.
    8.  

  36.  

 
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