A fuel pump is a vital component in a vehicle's fuel system. Its primary function is to transport fuel from the gas tank to the engine. Fuel pumps can be mechanical or electric, with electric pumps being more common in modern vehicles. They ensure that the engine receives a consistent supply of fuel for optimal performance. In addition to delivering fuel, the fuel pump also helps maintain the correct pressure within the fuel system. This pressure is crucial for efficient combustion in the engine. A malfunctioning fuel pump can lead to poor engine performance, reduced fuel efficiency, or even engine failure. Regular maintenance can help ensure the fuel pump operates effectively.