The fuel filter, located between the fuel tank and the carburetor or injection system, cleans the fuel entering the engine. The fuel filter may be located under the vehicle near a frame member or under the hood near the carburetor or fuel injectors. Fuel filters contain a paper type element to collect contaminants. A clogged fuel filter slows fuel delivery, lowers engine performance, and causes excessive fuel pump wear. Warning: Complete fuel system services in a well-ventilated area. Allow engine to cool, wear goggles, disposable gloves, and follow the manufacturer’s procedure to safely relieve fuel pressure.