> Main > Diesel Index > 1st Gen / 2nd Gen / 3rd Gen Maint > Fuel Filter Drain

Diesel Filter Water/Sediment Drain

Visit Geno's Garage
for Truck accessories.
Geno's Garage Truck Accessories


Drain the water and sediment from the separator each time the fuel tank is filled.

Shut off the engine. Manually open the drain valve until clear fuel is visible.

Top Load Filter Type (1)

Pull up on the drain valve lever until fluid drains out of the drain tube. If nothing comes out of the drain tube, lift the lever several times to break the vacuum seal.

Spin-on Filter Type (2)

Lift up on the drain valve until fluid drains out of the drain tube. When finished, make sure that the valve closes.


Graphic number: 06900130
NOTE: Some of the early 1st generation trucks have a screw valve without the WIF sensor. For these filters, you must unscrew the valve until the drain opens.