Fuel Filter: Description and Operation

Fuel filters fall into two categories: in-line filters and sending unit filter socks.

In-Line Filters
The in-line filter can be found in the fuel feed line under the vehicle and mounted on the driver's side of engine compartment frame rail.

In-Tank Fuel Filters
A woven plastic filter is located on the lower end of the fuel pickup tube in the fuel tank. This filter prevents dirt from entering the fuel line and also stops water, unless the filter becomes completely submerged in water. This filter is self-cleaning and normally requires no maintenance. Fuel stopage at this point indicated that the fuel tank contains an abnormal amount of sediment or water; the tank should therefore be thoroughly cleaned.