Fuel Tank: Description and Operation

The fuel system consists of the following:
^ the fuel tank
^ the fuel tank filler pipe which contains a restrictor plate to permit only unleaded fuel to he pumped into the fuel tank
^ a 1/8 turn type fuel tank filler cap
^ a fuel filter providing filtration to protect the fuel injectors
^ fuel line
^ fuel pressure regulator
^ a fuel pump assembly containing:
- the electric fuel pump which provides pressurized fuel to the engine
- the fuel level sensor
- an inlet filter
- a check valve which maintains system pressure after the pump is shut off
- a mechanical fuel pressure regulator with pressure relief for overpressure protection

The fuel pump is controlled by the Powertrain Control Module (PCM) which energizes the fuel pump relay. Electrical power to the pump is provided through the Inertia Fuel Shutoff (IFS) switch.