Fuel Filters

A fuel filter removes any dirt or debris from the fuel before it can get to the fuel injection system. It is usually fitted somewhere along the fuel line, although in some cars it is situated in the fuel tank.

The fuel is pumped through the filter using the pressure generated by the fuel pump. Inside of the filter is made up of pleated, permeable material. It allows the fuel through under pressure but blocks dirt particles.

Fuel Filters That Have Gone Bad

The reason we tend to forget about it is because, it is often hidden away under the car or even in the fuel tank. It may not be top of the list when it comes to car servicing, but a bad fuel filter can lead to a whole host of problems. In fact, the symptoms of a clogged up fuel filter are often overlooked when trying to diagnose problems with a car.

All of the fuel used by the engine goes through the fuel filter. It’s main purpose is to protect the fuel injection system from dirt that may have found its way into the fuel.

Over time, the filter material will become dirty, and less permeable. This will restrict the amount of fuel that can get through it, and to the engine.

It’s important that the fuel filter is changed regularly. Most manufacturers will recommend that it is changed every 30,000 Miles ( 50,000 Km). This may vary if the car has a diesel engine, or if it is driven under extreme conditions.

Many passenger cars now come with a fuel filter located in the fuel tank. These are not easily changed, and are supposed to last the life-time of the car. In reality, these filters are usually much larger than the serviceable kind, so they may last around 100,000 Miles.

Symptoms

A clogged fuel filter will often be mistaken as another more serious problem. Before you start pulling apart the engine, it’s usually a good idea to take a look at the service logs to see what the maintenance history of the car is like. If a car has been neglected, the fuel, air or oil filter could be to blame.

· Lack Of Engine Power

· Engine Stalling Under Strain

· Random Engine Misfire