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Home >> Chevrolet >> 2016 >> Malibu L >> Repair and Diagnosis >> Engine Performance >> Engine Control Systems >> Engine Controls And Fuel - 1.5L (LFV) - Repair Instructions >> Repair Instructions >> Fuel Injection Fuel Rail Assembly Replacement >> Installation Procedure
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Installation Procedure

    Fig 1: Plate And Bolts
    GM3709772Courtesy of GENERAL MOTORS COMPANY
  1. If any components of EN-51146  remover are installed to the fuel rail, perform the following procedure.
      NOTE:

      If the plate is not installed on the supports, it is likely one or more fuel injectors have been replaced. Disregard the following steps for fuel injectors that have already been replaced.

    1. Remove the bolts (1) and EN-51146-100  plate (2).
    2. Clean the fuel injector bolts of any residual threadlock agent.
    3. Remove only the front EN-51146-1-6  demounting screw and EN-51146-1-1  support (3) for the first fuel injector.
    4. Apply one drop of threadlock agent onto the NEW bolt (4). Refer to Adhesives, Fluids, Lubricants, and Sealers .
      5. CAUTION:

      Refer to Fastener Caution .

    5. Install the NEW fuel injector bolt (4) and tighten to 5 N.m (44 lb in).
    6. Remove the rear EN-51146-1-6  demounting screw and EN-51146-1-1  support (6) for the first fuel injector.
    7. Apply one drop of threadlock agent onto the NEW bolt (5). Refer to Adhesives, Fluids, Lubricants, and Sealers .
    8. Install the NEW fuel injector bolt (5) and tighten to 5 N.m (44 lb in).
    9. Repeat the same procedure for the remaining fuel injectors with EN-51146-1-6  demounting screw and EN-51146-1-1  supports still attached.
    10. Connect the fuel injector wiring harness plugs, if necessary.
  2. Ensure the fuel rail assembly and fuel injector bores have been cleaned prior to installation.
    3. Fig 2: Fuel Rail Assembly
    GM3656897Courtesy of GENERAL MOTORS COMPANY
    NOTE:

    During the installation of the fuel rail and injector assembly, ensure that the fuel injectors are positioned straight into the injector opening. Failure to follow this caution can tilt or bend the injectors and could cause leaks or malfunction after installation.

  3. Carefully install the fuel rail assembly (1).
  4. Push the fuel injectors slightly in their seats.
    5. Fig 3: Fuel Rail Bolt Tightening Sequence
    GM3656901Courtesy of GENERAL MOTORS COMPANY
  5. Tighten the 4 lower fuel rail bolts in increments of 1 turn until they are seated.
  6. Tighten the 4 lower fuel rail bolts in the sequence as shown to 10 N.m (89 lb in).
  7. Tighten the 4 upper fuel rail bolts in the sequence as shown to 10 N.m (89 lb in).
  8. Install Fuel Feed Intermediate Pipe Replacement 
  9. Connect Fuel Injection Fuel Rail Wiring Harness.
  10. Install Ignition Coil Replacement 
  11. Connect Battery Negative Cable Disconnection and Connection (with KL9)Battery Negative Cable Disconnection and Connection (without KL9)
  12. 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.
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