Removal Procedure

WARNING: This page is about a different variant/trim than selected.

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

Remove the upper intake manifold. Refer to Intake Manifold Replacement - Upper in Engine Mechanical-4.3L.
Remove and discard the fuel meter body seal.

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 with a spray type engine cleaner, such as GM X-30A, or equivalent, if necessary. Follow the package instructions. Do not soak the fuel meter body in liquid cleaning solvent.

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.

Fig 1: View Of MFI Fuel Meter Body

Courtesy of GENERAL MOTORS CORP.

Remove the injectors from the lower intake manifold bores.
Lightly pull on the injector tube and using a small pocket screwdriver, remove the injector from the manifold.
Remove the MFI (multi-port flexible injection) fuel meter body from the MFI bracket