Fuel System - 4.6L, 5.4L and 6.8L

WARNING: This page is about a different car, the 2005 Ford RV Cutaway, 2005 Ford Econoline, 2005 Ford E450 Super Duty, and 2005 Ford Cutaway. However, it is still accessible from the selected car via links, so may be relevant.

Fig 1: Identifying Fuel System - 4.6L, 5.4L And 6.8L Components - Gasoline

Courtesy of FORD MOTOR CO.

WARNING: Fuel in the fuel system remains under high pressure even when the engine is not running. Before repairing or disconnecting any of the fuel lines or fuel system components, the fuel system pressure must be relieved to prevent accidental spraying of fuel, causing personal injury or a fire hazard.

The vehicle:

is equipped with a multiport fuel injection (MFI) system.
has separately controlled fuel injectors mounted to the intake manifold for each cylinder.
has fuel injectors which are supplied with pressurized fuel from the fuel pump through the fuel rail.
has a fuel rail which is equipped with a fuel rail pressure (FRP) sensor.