Fuel Injector: Service and Repair

Fuel Rail Assembly:

Installing Injector:

NOTICE: Use care in removing injectors to prevent damage to the electrical connector pins on the injector and the nozzle. The fuel injector is serviced as a complete assembly only. Since it is an electrical component, it should not be immersed in any type of cleaner.


REMOVE OR DISCONNECT
1. Negative battery cable.
2. Relieve fuel system pressure.
^ Refer to Fuel System / Service and Repair. Service and Repair
3. Intake manifold plenum.
4. Fuel rail assembly.

DISASSEMBLE
1. Injector retainer clip and discard.
2. SFI fuel injector assembly.
3. Injector 0-ring seals from both ends of injector and discard. Save the 0-ring backups for use on reassembly.


^ When ordering new fuel injectors, be sure to order the correct injector for the application being serviced.
^ If fuel injectors are found to be leaking, the engine oil may be contaminated with fuel.


ASSEMBLE
1. Ensure that 0-ring backups are on injectors before installing new 0-rings. Lubricate new injector 0-ring seals with clean engine oil and install on injector assembly.
2. New injector retainer clips on injector assembly.
^ Position open end of clip facing injector electrical connector.
3. SFI fuel injector assembly into fuel rail injector socket with electrical connectors facing outward.
^ Push in far enough to engage retainer clip with machined slots on rail socket.


INSTALL OR CONNECT
1. Fuel rail assembly.
2. Intake manifold plenum.
3. Negative battery cable.