Fuel Injector: Service and Repair

WARNING: Fuel system pressure must be released prior to any service of fuel injection components.

NOTE: Tag injector electrical connectors for proper cylinder identification.

NOTE: Intake manifold plenum must be removed before fuel injectors can be replaced.

REMOVAL
1. Disconnect the negative battery cable.
2. Remove intake manifold plenum.

Fuel Rail 3.3L:

3. Remove the fuel rail.

Injector Removal 3.3L:

Fuel Injector:

4. Remove the fuel injector lock clip, and slide the injector straight out of the fuel rail cup.
5. Check each injector O-ring for damage and replace any damaged O-rings prior to reinstallation. If the injector is to be re-used, place a protective cap over the injector tip, while it is removed.

INSTALLATION
1. Before installing injectors lubricate the O-ring with a drop of clean engine oil.
2. Install injector top into fuel rail cup.
3. Install injector lock clip by sliding open end into injector slot, and onto the fuel rail cup side slots.
4. Install fuel rail.
5. install intake manifold plenum.
6. Connect the negative battery cable.
5. Connect the DRB II scan tool and select the Automatic Shut Down (ASD) Fuel System Test to pressurize fuel system and check for leaks. SEE COMPUTERS AND CONTROL SYSTEMS/SCAN TOOL ORIENTATION.

CAUTION: Unless the test is stopped or the ignition switch is turned to the OFF position the fuel pump relay and the ASD relay will remain energized for 7 minutes by the ASD Fuel System Test.