Removal Procedure

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.

Fig 1: View Of MFI Fuel Meter Body

Courtesy of GENERAL MOTORS CORP.

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.

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.