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Home >> Cadillac >> 2013 >> XTS FWD, Trans Mfr CD 6T75/M7V >> Repair and Diagnosis >> Engine Performance >> Engine Control Systems >> Engine Controls/Fuel - 3.6L (LFX) - Repair Instructions >> Repair Instructions >> Fuel Injection Fuel Rail Assembly Replacement - Bank 1 >> Installation Procedure
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Installation Procedure

    Fig 1: Sliding The Fuel Rail Toward The Front Of Engine
    GM2497938Courtesy of GENERAL MOTORS COMPANY
  1. Slide the fuel rail (1) toward the front of the engine approximately 1 inch (25.4mm), in order to align the center injector bore.
    2. Fig 2: Identifying Fuel Rail Bolt Tightening Sequence
    GM2193072Courtesy of GENERAL MOTORS COMPANY
    CAUTION:

    Refer to Fastener Caution .

  2. Hand tighten the two outer fuel rail fasteners to seat the injectors.
  3. Start and hand tighten the remaining fuel rail fasteners.
  4. Tighten the fuel rail fasteners in the sequence shown above:
    1. Tighten the fuel rail bolts first pass to 12 N.m (106 lb in).
    2. Tighten the fuel rail bolts a final pass to 23 N.m (17 lb ft).
  5. Install the fuel feed intermediate pipe. Refer to Fuel Feed Intermediate Pipe Replacement .
  6. Inspect for fuel leaks using the following procedure:
    1. Turn ON the ignition, with the engine OFF for 2 seconds.
    2. Turn OFF the ignition, for 10 seconds.
    3. Turn ON the ignition, with the engine OFF.
    4. Inspect for fuel leaks.
  7. Install the foam insulator to the fuel rails.
  8. Install the intake manifold. Refer to Intake Manifold Replacement .
  9. Install the fuel pipe shield. Refer to Fuel Pipe Shield Replacement .
  10. Install the low side fuel pressure service port cap.
  11. Install the fuel tank cap.
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