Fuel System - General Information

Component Location:

The fuel system:
^ is controlled by the Powertrain Control Module (PCM).
^ utilizes an electric, frame mounted fuel pump.
^ incorporates a fuel filter and water separator assembly.
^ incorporates an internal check valve with a built-in orifice that will bleed off system pressure approximately ten minutes after the pump is shut off.

The electric fuel pump:
^ draws fuel from the fuel tank.
^ circulates fuel under pressure through the fuel filter and water separator and the pressure regulator to the cylinder head fuel galleries and to the fuel injectors.

Excess fuel is returned to the fuel tank through the fuel return hose.

Fuel Filter/Water Separator
The diesel engine is equipped with a fuel filter and water separator assembly. Drain the water from the fuel filter at the recommended maintenance intervals. Refer to the Service Guide for the maintenance intervals.

A water in fuel indicator on the instrument panel will alert the operator. When the indicator glows continuously while the engine is running, drain the water from the fuel filter and water separator bowl as soon as possible to prevent damage to the fuel injection system.