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Home >> Chevrolet >> 2014 >> Express 1500 LS, AWD >> Repair and Diagnosis >> Engine Mechanical >> Mechanical >> Engine Mechanical - 4.8L (L20), 5.3L (LMF), Or 6.0L (L96 LC8) - Repair Instructions - Off Vehicle >> Repair Instructions - Off Vehicle >> Fuel Rail and Injectors Installation

Fuel Rail and Injectors Installation

    Fig 1: Fuel Rail & Injectors
    GM1401978Courtesy of GENERAL MOTORS COMPANY
    WARNING:

    Refer to Fuel Rail Stop Bracket Installation Warning .

    NOTE:

    DO NOT use the fuel injector O-ring seals again. Install NEW fuel injector O-ring seals during assembly.

  1. Lubricate the NEW fuel injector O-ring seals (532, 534) with clean engine oil.
  2. Install the O-ring seals to the fuel injectors.
  3. Install the fuel injectors (533) and retainers (521).
    4. Fig 2: Fuel Rail
    GM1401976Courtesy of GENERAL MOTORS COMPANY
  4. Install the fuel rail assembly (510) to the manifold. Push firmly on both sides of the rail until all the injectors have entered their bores.
  5. Apply a 5 mm (0.2 in) band of threadlock GM P/N 12345382 (Canadian P/N 10953489) or equivalent, to the threads of the fuel rail bolts. Refer to Adhesives, Fluids, Lubricants and Sealers .
    6. CAUTION:

    Refer to Fastener Caution .

  6. Install the fuel rail bolts (511) and tighten to 10 N.m (89 lb in).
    7. Fig 3: EVAP Purge Valve & Tubes
    GM1401970Courtesy of GENERAL MOTORS COMPANY
  7. Install the evaporative emission (EVAP) canister purge solenoid valve (730) and tubes (729, 735).
    8. Fig 4: View Of Fuel Rail Stop Bracket & Bolt
    GM260098Courtesy of GENERAL MOTORS COMPANY
  8. Install the fuel rail stop bracket and bolt and tighten to 50 N.m (37 lb ft).
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