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Home >> Chevrolet >> 2015 >> Camaro Z/28 >> Repair and Diagnosis >> Engine Mechanical >> Blowers, Superchargers & Turbochargers >> Engine Controls And Fuel - 6.2L (L99 LS3 LSA) Or 7.0L (LS7) - Repair Instructions >> Repair Instructions >> Fuel Injection Fuel Rail Assembly Replacement (LS7) >> Removal Procedure

Removal Procedure

  1. Remove the intake manifold cover. Refer to Intake Manifold Cover Replacement (Left Side)Intake Manifold Cover Replacement (Right Side) .
  2. Front End Sheet Metal Cross Brace Replacement - Remove
  3. Relieve the fuel system pressure. Refer to the Fuel Pressure Relief .
  4. Clean the fuel rail assembly before disconnection the fuel connections.
    5. CAUTION:
    • Remove the fuel rail assembly carefully in order to prevent damage to the injector electrical connector terminals and the injector spray tips. Support the fuel rail after the fuel rail is removed in order to avoid damaging the fuel rail components.
    • Cap the fittings and plug the holes when servicing the fuel system in order to prevent dirt and other contaminants from entering open pipes and passages.
  5. Disconnect the fuel feed hose from the fuel rail. Refer to Fuel Injection Fuel Feed Hose Replacement (Except LS7) Fuel Injection Fuel Feed Hose Replacement (LS7) .
  6. Remove the positive crankcase ventilation tube.(LS7 Clean Air) - Positive Crankcase Ventilation Hose/Pipe/Tube Replacement (LS7 Clean Air)Positive Crankcase Ventilation Hose/Pipe/Tube Replacement (LS7 Dirty Air)
    7. Fig 1: Identifying Injector Electrical Connectors
    GM1950743Courtesy of GENERAL MOTORS COMPANY
    NOTE:

    Observe the order sequence of the fuel injector electrical connectors (1).

  7. Disconnect the fuel injector electrical connectors (1) from the fuel injectors.
    8. Fig 2: Fuel Rail Components
    GM2291242Courtesy of GENERAL MOTORS COMPANY
  8. Using a suitable tool detach the engine electrical wiring harness from the fuel rail.
  9. Remove the fuel rail ground strap to intake manifold retaining bolt (2).
  10. Remove the fuel rail to intake manifold retaining bolts (1).
  11. Simultaneously lift both sides of the fuel rail (3) and remove the fuel rail assembly from the intake manifold.
    12. Fig 3: Identifying Fuel Injector O-Ring Seals
    GM1954075Courtesy of GENERAL MOTORS COMPANY
    NOTE:

    The fuel injector seals are single use items and must be replaced after the fuel injectors has been removed.

  12. Remove the fuel injector seals (2) from the fuel injectors (1) and discard.
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