The fuel filter tends to be placed at the bottom of an automobile, usually attached to a rail close to the rear wheels. Fuel filters are not always placed in the same location, however, so the best course of action is to check the vehicle's service manual, which will detail the exact location.
The fuel injection system is essential to the overall performance of a vehicle, and as a result, the fuel filter itself should be serviced or replaced regularly, as wear and tear, as well as dirt build up, can impede engine performance.
Newer vehicles tend to use electronic fuel injection systems, but older vehicles still make use of fuel filters.
While it is advisable to let qualified mechanics change the fuel filter, the operation can be performed by car owners provided they have the right tools.
Jack stands or ramps may be required depending on the location of the fuel pump. If this is the case, it is important to make sure that the ramp or jack stands are able to take the weight of a vehicle before attempting to change the fuel filter.
Safety glasses, pliers and a correct set of wrenches for use with car filter connections are also essential.