Fuel System - General Information

FUEL SYSTEM

WARNING:
- Do not smoke or carry lighted tobacco or open flame of any type when working on or near any fuel-related component. Highly flammable mixtures are always present and may be ignited, resulting in possible personal injury.
- Do not carry personal electronic devices such as cell phones, pagers or audio equipment of any type when working on or near any fuel-related components. Highly flammable mixtures are always present and may be ignited. Failure to follow these instructions can result in personal injury.

The fuel system consists of:
- a fuel rail.
- a multi-port fuel injection (MFI) system.
- a standard fuel tank.
- fuel tubes.
- a fuel tank filler pipe assembly, which cannot be modified in any way, that also contains a restrictor plate to permit only unleaded fuel to be pumped into the tank.
- a 1/4 turn-type fuel tank filler cap.
- an inertia fuel shutoff (IFS) switch.
- a fuel pump module (FPM) containing:
- the electric fuel pump, which provides pressurized fuel to the fuel rail.
- the fuel level sensor.
- an inlet filter.
- a check valve, which maintains system pressure after the pump is shut off.
- a pressure relief valve for overpressure protection in the event of restricted fuel flow.
- fuel filter providing filtration to protect the fuel injectors from foreign material.

The fuel pump is controlled by the powertrain control module (PCM). Electrical power to the pump is provided through the IFS switch located under the right front kick panel.

The engines are equipped with sequential multi-port fuel injection.

The fuel pressure is regulated to a constant pressure by an intake pressure regulator.