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Home >> Chevrolet >> 2007 >> Chevy Express G2500, Van Cargo, 6.6 6 >> Repair and Diagnosis >> External Pages >> Different variant/trim >> Section 5 (Engine Control System & Fuel System - 4.8L, 5.3L, And 6.0L - Introduction (2 Of 2)) >> Repair Instructions >> Fuel Rail Outlet Pipe Replacement >> Installation Procedure

Installation Procedure

WARNING: This page is about a different variant/trim than selected.
    Fig 1: Exploded View Of Fuel Rails & Injector Components
    GM350543Courtesy of GENERAL MOTORS CORP.
  1. Lubricate a NEW fuel return pipe O-ring (6) with clean engine oil.
  2. Install the fuel return pipe O-ring (6) onto the fuel return pipe (1).
  3. Install the fuel return pipe (1).
    NOTE: Refer to the FASTENER NOTICE .
  4. Install the fuel return pipe retainer (2) and the fuel return pipe attaching screw (3).
  5. Install the crossover fuel pipe retainer clip (5).
  6. Install the retaining clip attaching screw (4).

    Tighten: 

    • Tighten the crossover fuel pipe retainer clip attaching screw (4) to 3.8 N.m (34 lb in).
    • Tighten the fuel return pipe attaching screw (3) to 5 N.m (44 lb in).

    7. Fig 2: View Of Rear Of Engine Fuel Pipe Connections
    GM300360Courtesy of GENERAL MOTORS CORP.
  7. Connect the fuel return (2) and fuel feed (1) pipes to the fuel rail.
  8. Tighten the fuel fill cap.
  9. Connect the negative battery cable. Refer to Battery Negative Cable Disconnection and Connection .
  10. Use the following procedure in order to inspect for leaks:
    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.
  11. Install the fuel pressure connection cap.
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