Fuel filters like the Geo fuel filter are essential in maintaining the efficiency of combustion. Contaminated fuels are less likely to burn when there are impurities. Impurities such as water, dust, pollen grains, rust chips and paint chips interfere with normal combustion. These impurities also form residues that can damage the engine internal system. For instance, if rust chips get mixed with the fuel, these will increase the abrasive action of the pistons against the internal walls of the combustion cylinders. This will slow down the pistons because of increased friction. The moving parts (pistons and valves) as well as the internal walls of the combustion cylinders may become slightly deformed. Rust chips may also clog the valves, resulting in the slow and improper timing. Improper timing of the valves can lead to the loss of power or even breakdown of the engine.

A fuel filter is comprised of a filter medium (usually paper) enclosed in a porous metal canister. This canister is protected by a cylindrical metal housing with pressure valves. The pressure valves regulate the pressure of the fuel that flows through the filter medium. If there is too much pressure, the pressure valves open to release some amount of pressure. The filter medium is usually folded several times to maximize the surface area. Greater surface area means that the filter medium has greater capacity to trap contaminants. Contaminants are screened out while allowing fuel to circulate. Typically the sources of contaminants are from the outside environment. However, contaminants such as rust chips or paint chips may also come from the internal environment.

Rust may be formed on the internal walls of the fuel tank. Eventually, rust may fall off as chips that can get mixed with the fuel. An engine usually relies on gravity and partial vacuum of the combustion cylinder to allow the flow of fuel. Hence, it is crucial that the valves are properly functioning to maintain the proper flow of fuel. Fuel is injected into the combustion chambers in the form of mist. Fuel mist is comprised of atomized droplets of fuel. These droplets have greater surface area, allowing the efficient combination of fuel with the oxygen in air. However, if the fuel contains impurities, the fuel cannot effectively be atomized. Solid contaminants will act as nucleus for the fuel droplets.

On the other hand, liquid contaminants can affect the viscosity of the fuel. The fuel may become too viscous or too diluted to be effectively atomized. Consequently, the efficiency of combustion will be drastically affected. Maintaining the purity of the fuel is the job of the fuel filter. Here at Parts Train, we have the best aftermarket fuel filter that can fit any type of automobile.