Ford 2002 Excursion Manuel d'utilisateur télécharger pdf (Page 4)

DIESEL ENGINE INFORMATION

The diesel engine fuel system consists of:

• a frame-mounted electric fuel supply pump

• an engine mounted fuel filter/water separator

• a fuel restriction sensor

• a unit injector for each cylinder

The combination fuel filter/water separator removes both water and

impurities from the fuel. The filter should be changed at the

recommended service interval. Refer to the “Service Guide” for more

information. The filter bowl should be drained at regular intervals or

when the “WATER IN FUEL” light illuminates in the instrument cluster.

The fuel injectors are located in the center of the combustion chambers

in the cylinder head between the rocker arm assemblies. The glow plug

system and fuel injection system are controlled through the powertrain

control module (PCM).

Fuel is drawn from the fuel tank by a frame-mounted electric fuel pump.

The fuel pump provides pressurized fuel to the engine and is

electronically controlled by the fuel pump PCM relay. The fuel pump

contains a pressure relief valve for overpressure protection in the event

of restricted flow.

Lubrication system

It is important to change the engine oil at the recommended service

intervals, because oil viscosity is important in maintaining the oil

pressure required to actuate the fuel injectors. Extended oil change

intervals can negatively affect engine performance and fuel economy.

Pressurized oil from the turbocharger is also used to actuate an exhaust

backpressure warm-up system (if equipped). Pressurized oil from the

turbocharger is routed to the exhaust backpressure actuator. During

exhaust backpressure operation, the engine’s sound will be altered and

you may notice a change in engine performance while it’s engaged. This

function occurs only during cold weather warm-up cycle.

Diesel information

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Ford 2002 Excursion Manuel d'utilisateur Page 4