FixVault

Installation Procedure

  1. Use the EN-47909  cleaning kit to clean the fuel injector bores and sleeves. Fuel Rail and Injectors Cleaning and Inspection
  2. If necessary, replace the fuel injection fuel rail insulators. Fuel Rail and Injectors Cleaning and Inspection
  3. Fig 1: Fuel Injection Fuel Rail
    GM4791018Courtesy of GENERAL MOTORS COMPANY
  4. Install the fuel injection fuel rail (1), making sure the fuel injectors seat into the cylinder head evenly.
  5. Fig 2: Fuel Injection Fuel Rail Bolts
    GM4791019Courtesy of GENERAL MOTORS COMPANY
    CAUTION:

    Refer to Fastener Caution .

  6. To install the fuel injection fuel rail bolts (1), perform the following steps:
    1. First Pass: Start ALL bolts by hand, but do NOT tighten.
    2. Second Pass: Tighten the outer two bolts by hand to seat the fuel injectors.
    3. Third Pass: Tighten the remaining bolts by hand.
    4. Final Pass: Tighten ALL bolts in sequence to 25 N.m (18 lb ft).
  7. Fig 3: Fuel Injection Fuel Rail Wiring Harness
    GM4791001Courtesy of GENERAL MOTORS COMPANY
    NOTE:

    The fuel injection fuel rail wiring harness is clipped onto the fuel rail.

  8. Install the fuel injection fuel rail wiring harness (1).
  9. Install the fuel injection fuel rail pressure sensor. Fuel Injection Fuel Rail Fuel Pressure Sensor Replacement 
  10. Install a NEW fuel feed intermediate pipe. Fuel Feed Intermediate Pipe Replacement 
  11. Pressurize the fuel system and inspect for leaks.
  12. Install Fuel Injection Fuel Rail Noise Shield - Fuel Injection Fuel Rail Noise Shield Replacement