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Home >> Cadillac >> 2005 >> DeVille Base >> Repair and Diagnosis >> Engine Performance >> System >> Engine Controls - Introduction >> Repair Instructions >> Fuel Pressure Regulator Replacement >> Installation Procedure
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Installation Procedure

    Fig 1: Identifying Fuel Rail Components
    GM682635Courtesy of GENERAL MOTORS CORP.
  1. Install new O-rings on the fuel pressure regulator if a new regulator is not being installed. Lubricate the O-rings lightly with clean engine oil.
  2. Install the back-up ring.
  3. Install the upper O-ring (9).
  4. Install the filter.
  5. Install the lower O-ring (8).
  6. Install the fuel pressure regulator retainer clip (7).
  7. Connect the fuel pressure regulator vacuum line.
  8. Connect the negative battery cable. Refer to Battery Negative Cable Disconnect/Connect Procedure in Engine Electrical.
  9. Perform the following procedure in order to inspect for leaks:
    1. Turn ON the ignition, with the engine OFF for 2 seconds.
    2. Turn OFF the ignition for 10 seconds.
    3. Turn ON the ignition, with the engine OFF.
    4. Inspect for fuel leaks.
  10. Install the fuel injector sight shield. Refer to Fuel Injector Sight Shield Replacement in Engine Mechanical.
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