Removal Procedure
Notice: Use care in removing the fuel injectors in order to prevent damage to the fuel injector electrical connector pins or the fuel injector nozzles. Do not immerse the fuel injector in any type of cleaner. The fuel injector is an electrical component and may be damaged by this cleaning method.
Important: The fuel injector is serviced as a complete assembly only. If the fuel injectors are leaking, the engine oil may be contaminated with fuel.
- Relieve the fuel pressure. Refer to Fuel Pressure Relief .
- Remove the fuel rail. Refer to Fuel Injection Fuel Rail Assembly Replacement .
- Remove the fuel injector retaining clip.
- Remove the fuel injector from the fuel rail.
- Remove and discard the upper O-ring (3).
- Remove and discard the lower O-ring (2).
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 brown), be sure to install the black O-ring in the upper position and the brown O-ring in the lower position on the fuel injector. The O-rings are the same size but are made of different materials.
Important: The fuel injector O-rings should always be replaced whenever the fuel injectors are serviced.
Each fuel injector is calibrated for a specific flow rate. Be sure to use the correct part number when ordering replacement fuel injectors. Be sure to reinstall 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.- Lubricate the new upper (3) and lower (2) O-rings with clean engine oil.
- Install the new O-rings on the fuel injector.
- Install the fuel injector (5) onto fuel rail.
- Snap the fuel injector retaining clip onto the injector and fuel rail.
- Install the fuel rail. Refer to Fuel Injection Fuel Rail Assembly Replacement .
