Fuel Filter: Description and Operation
DESCRIPTIONThe purpose of the fuel filters is to clean the fuel of any dirt particles that can cause wear on the fuel injector's sliding surface; and to separate any water from the fuel, which is ever-present from the condensation in the fuel tank. The pre-fuel filter (water separator) is located between the fuel tank and the injection pump (figure 6). The secondary fuel filter is located between the fuel pump and the injection pump (figure 7).
Pre-Fuel Filter
When the condensed water in the pre-fuel filter (water separator) comes to the warning level indicated on its plastic body, drain the fluid immediately from the drain plug located bottom of water separator
Fuel Filter
The fuel filter is spin-on cartridge-type. The filter should be replaced. Never try to clean it.