Fuel Injector: Service and Repair

Injector Removal
1. Release fuel pressure to zero.







2. Drain coolant by removing drain plugs from both sides of cylinder block.
3. Separate ASCD and accelerator control wire from intake manifold collector.




4. Remove intake manifold collector from engine. The following parts should be disconnected to remove intake manifold collector.
- Harness connectors for
^ IACV-AAC valve
^ Throttle position sensor and closed throttle position switch
^ Ignition coil
^ Power transistor
^ EGRC-solenoid valve
^ IACV-air regulator
^ EGR temperature sensor
- Water hoses from collector and heater hoses
- PCV hose from RH rocker cover
- Vacuum hoses for
^ Canister
^ Brake master cylinder
^ Pressure regulator
- Purge hose from canister
- EGR tube
- Ground harnesses
- Air duct hose




5. Remove fuel feed and return hose from injector fuel tube assembly.
6. Disconnect all injector harness connectors.
7. Remove injector fuel tube assembly.




8. Remove any malfunctioning injector from injector fuel tube.
9. Replace or clean injector as necessary.

NOTE: Always replace 0-rings and insulators with new ones.

10. Connect injector to injector fuel tube.
11. Reinstall any part removed in reverse order of removal.

CAUTION: After properly connecting fuel hose to Injector and fuel tube, check connection for fuel leakage.