GM Service Manual Online
For 1990-2009 cars only
Makes 🢒 Pontiac 🢒 2002 🢒 Sunfire 🢒 Engine 🢒 Engine Controls - 2.2L (LN2) 🢒 Fuel Pressure Regulator Replacement

Removal Procedure

    Object Number: 143272 Size: SH
  1. Relieve the fuel system pressure. Refer to Fuel Pressure Relief .
  2. Remove the air cleaner outlet resonator. Refer to Air Cleaner Outlet Resonator Replacement .
  3. Remove the air cleaner resonator bracket (1).
  4. Disconnect the vacuum hose from the fuel pressure regulator.
  5. Disconnect the fuel return pipe from the fuel pressure regulator.

    6. Object Number: 752723 Size: SH
  6. Remove the pressure regulator attaching screw (7).

    7. Important: If the fuel pressure regulator is to be reinstalled, inspect the filter screen for contamination. If contamination is found, remove and discard the filter screen.

  7. Remove the pressure regulator assembly (6) and the O-ring (8). Discard the O-ring.

Installation Procedure

    Object Number: 752723 Size: SH
  1. Lubricate the new pressure regulator O-ring (8) with clean engine oil.
  2. Install the O-ring on the pressure regulator (6).

    3. Notice: Use the correct fastener in the correct location. Replacement fasteners must be the correct part number for that application. Fasteners requiring replacement or fasteners requiring the use of thread locking compound or sealant are identified in the service procedure. Do not use paints, lubricants, or corrosion inhibitors on fasteners or fastener joint surfaces unless specified. These coatings affect fastener torque and joint clamping force and may damage the fastener. Use the correct tightening sequence and specifications when installing fasteners in order to avoid damage to parts and systems.

  3. Install the pressure regulator attaching screw (7) coated with the appropriate thread-locking material.

    4. Tighten
    Tighten the pressure regulator attaching screw to 9.5 N·m (84 lb in).

  4. Connect the vacuum hose to the fuel pressure regulator.
  5. Connect the fuel return pipe to the fuel pressure regulator.

    6. Tighten
    Tighten the fuel return pipe fitting to 33 N·m (24 lb ft).


    Object Number: 143272 Size: SH
  6. Install the air cleaner resonator bracket.

    7. Tighten

    1. Tighten the bracket side nut (4) to 10 N·m (89 lb in).
    2. Tighten the bracket upper nut (3) to 25 N·m (18 lb ft).
    3. Tighten the bracket bolt (2) to 25 N·m (18 lb ft).
  7. Install the air cleaner outlet resonator. Refer to Air Cleaner Outlet Resonator Replacement .
  8. Connect the negative battery cable.
  9. Inspect for leaks:
    10. • Turn ON the ignition for 2 seconds.
    • Turn OFF the ignition for 10 seconds.
    • Turn ON the ignition.
    • Inspect for fuel leaks.