Forenza 2007

Fuel Rail (Supply Manifold) & Injectors

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Removal & Installation



  1. Before servicing the vehicle, refer to the Precautions Section.
  2.  
  3. Relieve the pressure from the fuel system.
  4.  
  5. Disconnect the negative battery cable.
  6.  
  7. Remove or disconnect the following:

    Intake Air Temperature (IAT) sensor connector
     
    Breather hose from cylinder head cover
     
    Positive Crankcase Ventilation (PCV) hose
     
    Throttle cable
     
    Fuel injector electrical connections
     
    Fuel feed line at the fuel rail
     
    Fuel rail retaining bolts
     
    Fuel rail with injectors attached
     
    Fuel injector retaining clips
     
    Fuel injectors from rail by pulling down and out
     
    Injector O-ring and discard

    Click image to see an enlarged view

    Fig. After removing the retaining clip, pull the injector down and out

     

  8.  

To install:


NOTE
Different injectors are calibrated for different flow rates. When ordering new fuel injectors, be certain to order the identical part number that is inscribed on the old injector.

  1. Lubricate the new injector O-rings with engine oil.
  2.  
  3. Injector to the fuel rail with terminals facing outward, and secure with retaining clip. Be sure that the clips are parallel to the injector harness connector.
  4.  
  5. Install or connect the following:

    New injector O-rings
     
    Fuel injector and fuel rail assembly into the cylinder head
     
    Fuel rail retaining bolts and tighten to 18 ft. lbs. (25 Nm)
     
    Fuel feed line to the fuel rail
     
    Fuel injector electrical connections. Rotate each injector as required.
     
    Throttle cable to the throttle body and bracket
     
    PCV hose to the cylinder head cover
     
    Breather hose to the cylinder head cover
     
    IAT sensor connector
     

  6.  
  7. Connect the negative battery cable.
  8.  
  9. With the ignition ON and the engine OFF check for leaks.
  10.  

 
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