Lower Manifold Assembly

Central MFI Assembly Parts Identification:

REMOVE OR DISCONNECT
1. Remove injector wiring harness connector at Central Multiport Fuel Injection (MFI) assembly.
2. Fuel fitting clip and discard.
3. Fuel inlet and return tube and fitting assembly.

- Discard O-ring seals.

4. Central MFI assembly.

- Squeeze poppet nozzle locking tabs together while lifting nozzle out of casting socket.
- After removing the six poppet nozzles, lift the Central MFI assembly out of casting.

INSTALL OR CONNECT

WARNING: To reduce the risk of fire and personal injury, verify that the poppet nozzles are firmly seated and locked in their casting sockets. An unlocked poppet nozzle could work loose from its socket thus resulting in a fuel leak.

1. Central MFI assembly.

- Align Central MFI assembly grommet with the casting grommet slots and push down until it is seated in bottom guide hole.
- Push poppet nozzles into casting sockets.

INSPECT
- Poppet nozzles must be firmly seated and locked in casting sockets. Refer to "CAUTION" statement above.

2. Fuel inlet and return tube and fitting assembly.

- New O-ring seals coated with clean engine oil.

3. New fuel fitting clip.

NOTE: Test for fuel leakage. Pressurize fuel system, verify no fuel leakage at inlet and return tube to Central MFI unit.