GM Service Manual Online
For 1990-2009 cars only
Makes 🢒 Pontiac 🢒 1997 🢒 Firebird 🢒 Engine 🢒 Engine Controls - 3.8L 🢒 Fuel Pressure Regulator Replacement

Removal Procedure

    Object Number: 12686 Size: SH
  1. Remove the fuel rail. Refer to Fuel Injection Fuel Rail Assembly Replacement .
  2. Clean any dirt from the fuel pressure regulator retaining ring.
  3. Remove the snap ring (1).
  4. Using a shop towel to catch any spilled fuel, lift and twist the fuel pressure regulator in order to remove the fuel pressure regulator (2) from the fuel pressure regulator housing.
  5. Remove the pressure regulator O-ring small (6).
  6. Remove the pressure regulator filter screen (5).
  7. Remove the pressure regulator O-ring large (4).
  8. Remove the pressure regulator O-ring back up (3).
  9. Cover the fuel pressure regulator housing to prevent contamination from entering the fuel system.

Installation Procedure

    Object Number: 12686 Size: SH

    Notice: 

       • Do not use compressed air in order to test or clean a fuel pressure regulator as damage to the fuel pressure regulator may result.
       • Clean the fuel pressure regulator filter screen with gasoline if necessary.
       • Do not immerse the fuel pressure regulator in a solvent bath in order to prevent damage to the fuel pressure regulator.

  1. Install new O-rings on the fuel pressure regulator, if a new fuel pressure regulator is not being installed. Lubricate the O-rings lightly with clean engine oil.
  2. Install pressure regulator O-ring back up (3).
  3. Install pressure regulator O-ring large (4).
  4. Install pressure regulator filter screen (5).
  5. Install pressure regulator O-ring small (6).
  6. Install the fuel pressure regulator (2) in the fuel pressure regulator housing.
  7. Install the snap ring (1).
  8. Install the fuel rail.