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Home >> Chevrolet >> 2008 >> Optra LS, Standard >> Repair and Diagnosis >> Engine Performance >> System >> Engine Controls And Fuel - 1.6L >> Repair Instructions >> Fuel Injection Fuel Rail Assembly Replacement >> Installation Procedure
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Installation Procedure

    Fig 1: View Of Fuel Injectors
    GM1289504Courtesy of GENERAL MOTORS CORP.
    IMPORTANT: Different injectors are calibrated for different flow rates. When ordering new fuel injectors, be certain to order the identical part number that is inscribed on the old injector.
  1. Lubricate the new fuel injector O-rings with engine oil. Install the new O-rings on the fuel injectors.
  2. Install the fuel injectors into the fuel rail sockets with the fuel injector terminals facing outward.
    3. Fig 2: View Of Fuel Rail Mounting Bolts
    GM1289502Courtesy of GENERAL MOTORS CORP.
  3. Install the fuel injector retainer clips onto the fuel injectors and the fuel rail ledge.
  4. Make sure that the clip is parallel to the fuel injector harness connector.
  5. Install the fuel rail assembly into the cylinder head.
    6. NOTE: Refer to Fastener Notice .
  6. Install the fuel rail mounting bolts.

    Tighten:  Tighten the fuel rail mounting bolts to 25 N.m (18 lb ft)  .

    7. Fig 3: View Of Fuel Feed Hose
    GM1289505Courtesy of GENERAL MOTORS CORP.
  7. Connect the fuel feed hose.
    8. Fig 4: Identifying Intake Manifold Bracket Bolts
    GM1289501Courtesy of GENERAL MOTORS CORP.
  8. Connect the fuel injector harness connectors. Rotate each fuel injector as required to avoid stretching the wiring harness.
  9. Install the intake manifold bracket with the bolts.
  10. Connect the negative battery cable.
  11. Perform a leak check of the fuel rail and fuel injectors.
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