F 350 2WD Super Duty V8-7.3L DSL Turbo VIN F (1999)
Fuel/Water Separator: Service and Repair
Fuel Filter/Water Separator Drain Procedure
Fuel filter/water separator drain procedure
1. Stop the vehicle and shut off the engine.
WARNING: 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.
2. Open the hood. Place an appropriate container under the filter drain under the vehicle.
3. Locate the fuel filter drain valve. If necessary, remove the engine appearance cover.
4. Open fuel filter drain valve by turning clockwise. Allow to drain for approximately 25 seconds or until clean fuel is observed. Close filter drain
valve by turning counterclockwise until firmly seated.
5. Verify that the fuel filter drain valve is closed. If removed, install the engine appearance cover.
6. Close the hood and remove the container from under the vehicle.
7. Restart the engine and check WATER IN FUEL indicator light. The light should not glow. If it continues to glow, have fuel system checked and
repaired.
