Lucerne V6-3.8L (2007)
Fuel Injector: Service and Repair
Fuel Injector Replacement
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 found to be leaking, the engine oil may be
contaminated with fuel. Fuel injector O-rings should always be replaced whenever fuel injectors are serviced.
1. Remove the fuel rail.
2. Remove the fuel injector retainers (1).
3. Remove the fuel injectors (3).
4. Remove and discard the fuel injector upper O-ring seals (2).
5. Remove and discard the fuel injector lower O-ring seals (4).
Installation Procedure
Important: When ordering new fuel injectors, order the correct injector for the application being serviced.
The fuel injector (1) is stamped with a part number identification (2), a manufacturing date (3), a week code (1), and a production plant number (4).
