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Home >> Cadillac >> 2005 >> XLR >> Repair and Diagnosis >> Engine Performance >> System >> Engine Controls - Introduction >> Repair Instructions >> Fuel Injector Replacement >> Installation Procedure
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Installation Procedure

CAUTION: In order to reduce the risk of fire and personal injury that may result from a fuel leak, always install the fuel injector O-rings in the proper position. If the upper and lower O-rings are different colors (black and blue), be sure to install the blue O-ring in the upper position and the black O-ring in the lower position on the fuel injector. The O-rings are the same size but are made of different materials.
IMPORTANT:
  • Be sure to use the correct part number when ordering replacement fuel injectors.
  • The fuel injector O-rings should always be replaced whenever the fuel injectors are serviced. Be sure to install the correct O-ring for the fuel injector. If the O-ring is not seated properly, a vacuum leak is possible and driveability complaints may occur.
  1. Lubricate the new upper and lower (4) O-rings with clean engine oil.
  2. Install the new upper and lower injector O-rings on the fuel injector.
  3. Install the fuel injector on to the fuel rail.
  4. Install the fuel rail. Refer to Fuel Rail Assembly Replacement .
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