Camaro, Firebird, 1999 - 2002

Fuel Rail (Supply Manifold) & Injectors

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Removal & Installation



3.8L Engines
  1. Before servicing the vehicle, refer to the Precautions Section.
  2.  
  3. Relieve the fuel system pressure.
  4.  
  5. Remove or disconnect the following:

    Fuel feed and return lines from the fuel rail
     
    Fuel injector electrical connectors
     
    Vacuum line from the fuel pressure regulator
     
    Manifold Absolute Pressure (MAP) sensor electrical connector
     
    Vacuum line from the vacuum switch at the fuel pipe bundle
     
    Fuel injector harness fasteners
     
    Fuel rail hold-down bolts
     
    Fuel rail with fuel injectors
     
    Fuel injectors by removing the retainer clips

    Click image to see an enlarged view

    Fig. View of the fuel rail assembly-3.8L engine



    Click image to see an enlarged view

    Fig. Exploded view of the fuel injector-3.8L engine

     

  6.  

To install:


WARNING
If the new O-rings are different colors (black and brown), install the black one in the upper portion and the brown one in the lower portion of the fuel injector.

  1. Coat the injector O-rings with clean engine oil prior to installation.
  2.  
  3. Install or connect the following:

    Fuel injectors with new O-rings to the fuel rail by installing the retainer clips
     
    Fuel rail with fuel injectors. Torque the bolts to 89 inch lbs. (10 Nm).
     
    Fuel injector harness fasteners
     
    Vacuum line to the vacuum switch at the fuel pipe bundle
     
    MAP sensor electrical connector
     
    Vacuum line to the fuel pressure regulator
     
    Fuel injector electrical connectors
     
    Fuel feed and return lines to the fuel rail
     
    Negative battery cable
     

  4.  
  5. Perform the following procedure in order to check for leaks:
    1. Turn the ignition switch ON for 2 seconds.
    2.  
    3. Turn the ignition switch OFF for 10 seconds.
    4.  
    5. Turn the ignition switch ON and check for fuel leaks.
    6.  

  6.  

5.7L Engine
  1. Before servicing the vehicle, refer to the Precautions Section.
  2.  
  3. Relieve the fuel system pressure.
  4.  
  5. Remove or disconnect the following:

    Fuel feed hose from the fuel rail
     
    Accelerator cable and cable bracket
     
    Fuel injector electrical connectors
     
    Electrical harness from the fuel rail
     
    Fuel rail assembly
     
    Fuel injectors from the fuel rail by spreading the injector retainer clips

    Click image to see an enlarged view

    Fig. Exploded view of the fuel injector and fuel rail assembly-5.7L engine

     

  6.  

To install:

  1. Lubricate the new injector O-ring seals with clean engine oil prior to installation.
  2.  
  3. Install or connect the following:
    NOTE
    Position the fuel injector electrical connector facing outward.



    New O-rings on the fuel injectors
     
    Fuel injectors to the fuel rail using new retaining clips
     



    Fuel rail assembly. Torque the bolts to 89 inch lbs. (10 Nm).
     
    Electrical harness to the fuel rail
     
    Fuel injector electrical connectors
     
    Accelerator cable and cable bracket
     
    Fuel feed hose to the fuel rail
     
    Negative battery cable
     

  4.  
  5. Perform the following procedure:
    1. Turn the ignition switch ON for 2 seconds.
    2.  
    3. Turn the ignition switch OFF for 10 seconds.
    4.  
    5. Turn the ignition switch ON and check for fuel leaks.
    6.  

  6.  

 
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