Section 10-01B: Fuel Tank, Filters, Tubes and Fuel Pump, Diesel Engine | 1996 F-Series and F-Super Duty Vehicles Equipped with Diesel Engines Workshop Manual |
Water should be drained from the engine-mounted fuel/water separator whenever the warning lamp comes on or every 8000 km (5000 miles). More frequent drain intervals may be required depending on fuel quality and vehicle usage.
NOTE: Dispose of drainage waste properly in accordance with all federal, state and local requirements.
The instrument panel warning lamp (WATER IN FUEL) will glow when approximately 0.1 liter (0.1 quart) of water has accumulated in the sedimentor. When the warning lamp glows, shut off the engine as soon as safely possible.