Mark LT 4WD V8-5.4L VIN 5 (2006)
-
There are 2 fuel systems, an early and late build fuel system. The early build system uses a 7.9 mm (5/16 in) fuel line and connectors. The late
build uses a 9.5 mm (3/8 in) fuel line and connectors. Do not interchange the 2 fuel line sizes or components because fuel leakage will take place
causing a fire hazard. Failure to follow these instructions may result in personal injury.
1. With the vehicle in NEUTRAL, position it on a hoist.
2. Release the fuel system pressure.
3. Disconnect the battery ground cable.
4. Remove the fuel tank.
5. Disconnect the fuel and vapor tube assembly quick connect couplings at the fuel pump module.
6. Using the special tool, remove the fuel pump module locking ring.
7. NOTE: The fuel pump module must be handled carefully to avoid damage to the float arm and the filter.
Remove the fuel pump module.
8. Remove and discard the fuel pump module O-ring seal.
-
Lubricate the new fuel pump module O-ring seal with clean engine oil prior to installation.
9. To install, reverse the removal procedure.
