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Home >> Buick >> 2005 >> Park Avenue Base >> Repair and Diagnosis >> Engine Performance >> System >> Engine Control System - Introduction >> Repair Instructions >> Fuel Rail Assembly Replacement (VIN 1) >> Installation Procedure
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Installation Procedure

CAUTION: In order to reduce the risk of fire and personal injury that may result from a fuel leak, always install the fuel injector O-rings in the proper position. If the upper and lower O-rings are different colors (black and brown), be sure to install the black O-ring in the upper position and the brown O-ring in the lower position on the fuel injector. The O-rings are the same size but are made of different materials.
    Fig 1: Removing/Installing Fuel Rail (VIN 1)
    GM12256Courtesy of GENERAL MOTORS CORP.
    IMPORTANT: The O-rings must be replaced on all components that are serviced.
  1. Lightly oil the fuel injector O-rings with clean motor oil.
  2. Place the fuel rail assembly on the intake manifold.
  3. Seat the fuel injectors by HAND.
    4. NOTE: Refer to Fastener Notice in Cautions and Notices.
  4. Install the fuel rail hold-down nuts (4).

    Tighten:  Tighten the fuel rail hold-down nuts to 10 N.m (89 lb in).

  5. Install the bypass valve actuator. Refer to Bypass Valve Actuator Replacement .
  6. Install the rear generator mounting bracket with the evaporative emission (EVAP) canister purge valve attached. Refer to Generator Replacement (L36) or Generator Replacement (L67) in Engine Electrical.
  7. Connect the fuel injector electrical harness clips to the front of fuel rail.
    8. Fig 2: View Of Fuel Injector Electrical Connectors
    GM198402Courtesy of GENERAL MOTORS CORP.
  8. Connect the fuel injector electrical connectors to the fuel injectors.
  9. Install the ignition coil wires to the retainer clips on top of super charger.
    10. Fig 3: Removing/Installing Vacuum Hose From Pressure Regulator (VIN 1)
    GM207599Courtesy of GENERAL MOTORS CORP.
  10. Connect the vacuum line to the fuel pressure regulator.
    11. Fig 4: Removing/Installing Fuel Feed & Return Pipes (VIN 1)
    GM32404Courtesy of GENERAL MOTORS CORP.
  11. Connect the fuel feed, (2) and return pipes (1) to the fuel rail tubes. Refer to Quick Connect Fitting(s) Service (Metal Collar) .
  12. Tighten the fuel fill cap.
  13. Connect the negative battery cable. Refer to Battery Negative Cable Disconnect/Connect Procedure (Top Post) in Engine Electrical.
  14. Inspect for leaks using the following procedure:
    1. Turn ON the ignition, for 2 seconds.
    2. Turn OFF the ignition, for 10 seconds.
    3. Turn ON the ignition.
    4. Inspect for fuel leaks.
  15. Install the fuel injection sight shield. Refer to Fuel Injector Sight Shield Replacement (L36) or Fuel Injector Sight Shield Replacement (L67) in Engine Mechanical.
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