Fuel Rail & Injectors: Notes
WARNING: This page is about a different car, the 2002 Saturn Vue. However, it is still accessible from the selected car via links, so may be relevant.
NOTE:
When cleaning or servicing the fuel rail, care should be taken to ensure that the plastic fuel rail surfaces that mate to the fuel injector "O" rings are not scratched. Whenever the fuel rail is removed for service, upper and lower "O" ring seals must be replaced. The injectors can be serviced individually if required.