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Home >> Buick >> 2017 >> LaCrosse Base >> Repair and Diagnosis >> Engine Performance >> Engine Control Systems >> Engine Controls And Fuel - 3.6L (LGX) - Repair Instructions >> Repair Instructions >> Fuel Injection Fuel Rail Assembly Replacement - Bank 2 >> Installation Procedure

Installation Procedure

    Fig 1: Fuel Injection Fuel Rail Assembly And Fasteners (With Tightening Sequence)
    GM4309805Courtesy of GENERAL MOTORS COMPANY
    Fig 2: Fuel Injection Fuel Rail Fasteners
    GM4310701Courtesy of GENERAL MOTORS COMPANY
  1. Position the fuel injection fuel rail assembly (2) into the cylinder head as evenly as possible.
    CAUTION:

    Refer to Fastener Caution .

    NOTE: The final pass should be performed in the sequence shown in the graphic.
  2. 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.
    3. Third Pass: Tighten the inner two bolts by hand.
    4. Final Pass: 25 N.m (18 lb ft)
  3. Install the NEW fuel feed intermediate pipe. Fuel Feed Intermediate Pipe Replacement 
    4. Fig 3: Fuel Injection Fuel Rail Wiring Harness And Electrical Connector
    GM4310634Courtesy of GENERAL MOTORS COMPANY
  4. Electrical Connector (1) @ Fuel Injection Fuel Rail Wiring Harness (2) - Connect
  5. 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.
  6. Fuel Injection Fuel Rail Noise Shield Replacement  - Install
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