What is the function of a fuel filter?

The function of a fuel filter is primarily to remove impurities from the fuel before it reaches the engine. This is crucial because contaminants such as dirt, rust, and particles present in the fuel can cause significant damage to the fuel injectors and other engine components if not filtered out. A clean fuel supply helps ensure that the engine operates efficiently and reduces the likelihood of malfunctions or performance issues caused by foreign materials. By filtering the fuel, the fuel filter contributes to the overall longevity and reliability of the engine, ensuring it runs smoothly and effectively.