Installation Procedure

Install the MFI fuel meter body into the bracket on the lower intake manifold. Place all of the fuel tubes in a forward position. Route the number 3 fuel tube behind the numbers 1 and 5 fuel tubes.

Fig 1: Locating Fuel Meter Body & Fuel Injector
Courtesy of GENERAL MOTORS CORP.

CAUTION: Verify that the injectors are firmly seated and locked in their casting sockets, in order to reduce the risk of fire and personal injury. An unlocked or a loose injector could work loose from its socket and produce a fuel leak. If an injector is loose, replace the retainer.

IMPORTANT: The fuel meter body assembly and the lower intake are numbered to indicate correct injector order. Ensure that the electrical connectors on the injectors do not interfere with each other and point towards the center of the intake manifold. Rotate the electrical connectors inboard, if necessary.
Insert the 6 injectors in the following sequence:
1. Insert #3 injector into the #3 injector hole.
2. Insert #5 injector into the #5 injector hole.
3. Insert #1 injector into the #1 injector hole.
4. Insert #2 injector into the #2 injector hole.
5. Insert #4 injector into the #4 injector hole.
6. Insert #6 injector into the #6 injector hole.
Install the upper intake manifold assembly. Refer to Intake Manifold Replacement - Upper in Engine Mechanical.
Connect the negative battery cable.
Inspect for leaks using the following procedure:
1. Turn ON the ignition for 2 seconds.
2. Turn OFF the ignition for 10 seconds.
3. Turn ON the ignition.
4. Inspect for fuel leaks.
Install the engine cover. Refer to Engine Cover Replacement in Interior Trim.