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4. On F-Series Super Duty and Excursion vehicles, be sure that the
rubber water drain hose is not kinked under the air filter housing. If it’s
kinked, adjust the hose so that it hangs free.
When servicing the air filter, always be sure that the rubber
water drain hose is not kinked or obstructed. Failure to do so
may result in severe engine damage when driving through deep water
and/or encountering unusually heavy precipitation conditions.
FUEL FILTER/WATER SEPARATOR
The engine is equipped with a combination fuel filter/water separator
located in the “V” of the engine.
Water should be drained from the
filter bowl whenever the warning
light comes on or every 8 000 km
(5 000 miles). The WATER IN FUEL
light will come on when
approximately 100 cc (0.2 pints) of water accumulates in the separator.
Replace the fuel filter with Motorcraft Part No. FD-4596 (Ford Part No.
F81Z-9N184–AA).
Fuel filter/water separator drain procedure
1. Stop the vehicle and shut off the engine.
The vehicle must be stopped with the engine off when draining
the fuel filter/water separator. Fuel may ignite if separator is
drained while the engine is running or vehicle is moving.
WATER
IN
FUEL
General maintenance information
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