Fuel Filter: Description and Operation

Fuel is filtered at three locations:
- in-line
- in-tank
- fuel injector inlet







In-Line

WARNING: RUBBER GROMMETS USED TO MOUNT THE FUEL FILTER BRACKET ARE ELECTRICALLY CONDUCTIVE TO MINIMIZE ELECTROSTATIC CHARGE BUILDUP IN THE FUEL SYSTEM. USE ONLY REPLACEMENT PARTS WITH ELECTRICALLY CONDUCTIVE GROMMETS, AVAILABLE FROM THE MANUFACTURER TO AVOID POTENTIAL FIRE HAZARD.

NOTE: When replacing fuel filter and bases, use the fuel filter and base specified for the engine being serviced.

The in-line fuel filter:
- provides filtration to protect the small metering orifices of the fuel injectors.
- is located downstream of the Fuel Pump (FP) module and is mounted on the underbody.
- is a one-piece construction which cannot be cleaned. If it becomes clogged, it must be replaced.

The flexible fuel vehicle fuel filter and base is only compatible with fuel ethanol. Use of a gasoline fuel filter and base will result in failure of the fuel filter and base. The fuel filter and base is located at the RH rear frame rail adjacent to the RH front corner of the fuel tank.

In-Tank
A nylon filter element is mounted on the fuel pump module inside the fuel tank and is used to protect the fuel pump module from fuel tank contaminants.







Fuel Injector Screen
A filter screen is located at the top of each injector and is not serviceable. If the injector screen becomes clogged, the complete injector assembly must be replaced.