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Home >> Chevrolet >> 2001 >> Venture Base, Van Passenger >> Repair and Diagnosis >> External Pages >> Different car >> Section 159 (Engine Controls - Removal & Installation) >> Fuel Systems (CNG) >> Fuel Rail & Injectors >> Removal

Fuel Rail & Injectors: Removal

WARNING: This page is about a different car, the 2003 Pontiac Sunfire and 2003 Chevrolet Cavalier. However, it is still accessible from the selected car via links, so may be relevant.
  1. Release fuel pressure. See FUEL SYSTEM PRESSURE RELEASE (CNG) . Disconnect negative battery cable.
  2. Disconnect the engine fuel pipes from the engine fuel flex hoses. Remove the engine fuel supply and return pipes. See FUEL LINE QUICK CONNECT FITTINGS  under FUEL SYSTEMS (GASOLINE).
  3. Use a back-up wrench on the fuel pressure regulator and disconnect the return line.
  4. Disconnect the fuel feed line from the fuel rail. See Fig 1.
  5. Remove the engine fuel pipes fasteners located on the engine. See Fig 2.
  6. Remove the engine fuel pipes.
  7. Remove the air cleaner outlet resonator.
  8. Disconnect the vent pipe from the fuel pressure regulator. See Fig 3.
  9. Remove the retaining bolt from the fuel pressure regulator.
  10. Remove the fuel pressure regulator. See Fig 4.
  11. Disconnect the fuel injector harness connectors.
  12. Remove the fuel rail attaching studs. See Fig 5.
  13. Remove the fuel rail using the following procedure:
    • Pull the fuel rail back and upward to remove the fuel injectors from the cylinder head ports.
    • Rotate the fuel rail to position the injectors downward.
    • Remove the fuel rail.
  14. Disconnect the fuel injector harness connector.
  15. Remove the fuel injector retainer clip. See Fig 6.
  16. Remove the fuel injectors from the fuel rail. See Fig 7.
  17. Visually inspect the fuel injector to determine if the upper "O" ring was also removed. If the upper "O" ring in not removed, remove the "O" ring from the fuel rail assembly.
  18. If the fuel injector insulator cups are removed from the cylinder head while removing the fuel rail, NEW insulator cups must be installed.
  19. Remove and discard the fuel injector "O" rings.
Fig 1: Disconnecting Fuel Feed Line
G00217331Courtesy of GENERAL MOTORS CORP.
Fig 2: Locating Fuel Pipe Fasteners
G00217332Courtesy of GENERAL MOTORS CORP.
Fig 3: Disconnecting Vent Pipe From Pressure Regulator
G00217333Courtesy of GENERAL MOTORS CORP.
Fig 4: Removing/Installing Fuel Pressure Regulator
G00217334Courtesy of GENERAL MOTORS CORP.
Fig 5: Locating Fuel Rail Attaching Studs
G00217336Courtesy of GENERAL MOTORS CORP.
Fig 6: Removing/Installing Fuel Injector Retainer Clip
G00217335Courtesy of GENERAL MOTORS CORP.
Fig 7: Removing/Installing Fuel Injector From Fuel Rail
G00217337Courtesy of GENERAL MOTORS CORP.
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