Fuel Tank and Lines

FUEL TANK AND LINES

The fuel system consists of the:
- fuel tank.
- fuel tank filler pipe which contains a restrictor plate to permit only unleaded fuel to be pumped into the fuel tank.
- electronic returnless fuel system.
- 1/4 turn-type fuel tank filler cap on early build Explorer/Mountaineer and all Explorer Sport Trac.
- capless fuel tank filler pipe on late build Explorer/Mountaineer.
- fuel filter providing filtration to protect the fuel injectors.
- fuel line.
- fuel pump assembly containing:
- the electric fuel pump which provides pressurized fuel to the engine.
- a serviceable fuel level sender.
- an inlet filter.
- a check valve which maintains system pressure after the pump is shut off.

The fuel pump is controlled by the PCM which energizes the fuel pump relay. Electrical power to the pump is provided through the inertia fuel shutoff (IFS) switch.