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Home >> Chevrolet >> 2007 >> Optra LS, Automatic >> Repair and Diagnosis >> Engine Performance >> System >> Engine Controls And Fuel - 1.8L (LDA) >> Repair Instructions >> Fuel Rail Assembly Replacement >> Removal Procedure
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Removal Procedure

    Fig 1: View Of Engine Cover And Fasteners
    GM1701075Courtesy of GENERAL MOTORS CORP.
    CAUTION: Refer to Relieving Fuel Pressure Caution .
    CAUTION: Relieve the fuel system pressure before servicing fuel system components in order to reduce the risk of fire and personal injury.
    After relieving the system pressure, a small amount of fuel may be released when servicing the fuel lines or connections. In order to reduce the chance of personal injury, cover the regulator and the fuel line fittings with a shop towel before disconnecting. This will catch any fuel that may leak out. Place the towel in an approved container when the disconnection is complete.
  1. Relieve the fuel system pressure. Refer to Fuel Pressure Relief .
    2. CAUTION: Refer to Battery Disconnect Caution .
  2. Disconnect the negative battery cable.
  3. Remove engine cover.
  4. Disconnect the intake air temperature (IAT) sensor connector.
  5. Disconnect the breather hose from the valve cover.
    6. Fig 2: View Of Fuel Feed Line
    GM1289508Courtesy of GENERAL MOTORS CORP.
  6. Disconnect the fuel feed line at the fuel rail.
  7. Remove the fuel rail retaining bolts.
    8. Fig 3: View Of Fuel Rail And Injectors
    GM1289509Courtesy of GENERAL MOTORS CORP.
    NOTE:
    • Use care when servicing the fuel system components, especially the fuel injector electrical connectors, the fuel injector tips, and the injector O-rings. Plug the inlet and the outlet ports of the fuel rail in order to prevent contamination.
    • Do not use compressed air to clean the fuel rail assembly as this may damage the fuel rail components.
    • Do not immerse the fuel rail assembly in a solvent bath in order to prevent damage to the fuel rail assembly.
    IMPORTANT: If an injector becomes separated from the rail and remains in the cylinder head, replace the injector O-ring seals and the retaining clip.
  8. Remove the fuel rail with the injectors attached.
    9. Fig 4: Identifying Fuel Injector Retaining Clip
    GM1256147Courtesy of GENERAL MOTORS CORP.
  9. Remove the fuel injector retainer clips.
  10. Remove the fuel injectors by pulling them down and out.
  11. Discard the fuel injector O-rings.
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