Fuel Meter Body: Service and Repair

FUEL METER BODY ASSEMBLY REPLACEMENT

REMOVAL PROCEDURE
An 8-digit part identification number is on a mylar label affixed to the fuel meter body assembly. Refer to this number if servicing or part replacement is required.

1. Relieve the fuel system pressure. Refer to Fuel Pressure Relief Procedure.
2. Remove the upper intake manifold assembly.
3. Do not soak fuel meter body assemblies in liquid cleaning solvent.

NOTE: Do not use any solvent that contains Methyl Ethyl Ketone (MEK). This solvent may damage fuel system components.

Before removal, clean the fuel meter body assembly with a spray type engine cleaner, GM X-30A, if necessary. Follow the package instructions.




4. Squeeze the injector locking tabs together while lifting the injector out of the casting socket.

NOTE: Cover the injector sockets in order to prevent dirt and other contaminants from entering the open fuel passages.

IMPORTANT: When disconnecting the injectors, remember the sequence in order to ensure correct injector placement to each cylinder.

5. Remove the fuel meter body from the bracket by releasing the lock tabs on the bracket.

INSTALLATION PROCEDURE




1. 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.

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.

2. 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.
3. Install the upper intake manifold assembly.
4. Connect the negative battery cable.
5. 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.
6. Install the engine cover.