GM Lumina/Grand Prix/Cutlass Supreme/Regal 1988-1996

Fuel Pressure Connection

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REMOVAL & INSTALLATION



2.3L and 3.1L Engines

See Figure 1



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Fig. Fig. 1: Fuel pressure relief connection location-2.3L engine shown

  1. Clean the area around the connection with GM cleaner X-30A or equivalent.
  2.  
  3. Properly relieve the fuel system pressure.
  4.  
  5. If not already done, disconnect the negative battery cable.
  6.  
  7. Remove the fuel pressure connection and seal. Discard the seal.
  8.  

To install:
  1. Place a new seal on the pressure connection.
  2.  
  3. Install th fuel pressure connection assembly in the fuel rail. TIghten to the following specifications:

    2.3L Engine: 115 inch lbs. (13 Nm)
     
    3.1L Engine: 88 inch lbs. (10 Nm)
     

  4.  
  5. Connect the negative battery cable and turn the ignition ON for 2 seconds, OFF for 10 seconds, then ON and check for fuel leaks.
  6.  

3.4L Engine

The fuel pressure connection on these engines is non-replaceable, but it is serviceable.

  1. Clean the area around the connection with GM cleaner X-30A or equivalent.
  2.  
  3. Properly relieve the fuel system pressure.
  4.  
  5. If not already done, disconnect the negative battery cable.
  6.  
  7. Remove the fuel pressure connection cap.
  8.  
  9. Using a standard valve core removal tool, remove the and discard the valve core assembly.
  10.  

To install:
  1. Using the proper tool, install a new valve core assembly.
  2.  
  3. Install the fuel pressure connection cap.
  4.  
  5. Connect the negative battery cable and turn the ignition ON for 2 seconds, OFF for 10 seconds, then ON and check for fuel leaks.
  6.  

 
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