Fuel Injector(S) Replacement

Air Plenum And Fuel Rail Removal:

Multi-Port Fuel Injector:

REMOVE OR DISCONNECT:

NOTE: 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.

1. Negative battery terminal.
2. Relieve fuel system pressure.
3. Intake manifold plenum.
4. Fuel rail assembly.

DISASSEMBLE:
1. Injector retainer clip and discard.
2. MPFI injector assembly.
3. Injector O-ring seals from both ends of injector and discard.

IMPORTANT: Each injector is calibrated for a specific flow rate. When replacing fuel injectors, order replacements with the identical part number as the old injectors.

ASSEMBLE:

1. Lubricate new injector O-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. MPFI 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.

Injector Part Number Location:

Injector Installation:

IDLE LEARN PROCEDURE: Any time the battery is disconnected, the programmed position of the IAC valve pintle is lost, and replaced with a default value. To return the IAC valve pintle to the correct position, perform the following procedure:

1. After restoring battery power, connect the Tech 1 "SCAN" tool.
2. Select "IAC SYSTEM," then select "IDLE LEARN" in the "MISC TEST" mode.
3. Proceed with idle learn as directed.
^ This procedure allows the ECM memory to be updated with the correct IAC valve pintle position, for the vehicle, and provide a stable idle speed.