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A fuel pump is responsible for transporting fuel from the fuel tank to the engine's fuel injection system or carburetor. It ensures a consistent and adequate fuel supply for engine operation.

Vehicles commonly use electric fuel pumps, which are typically located inside the fuel tank, and mechanical fuel pumps, which are driven by the engine's camshaft.

Signs include engine sputtering at high speeds, difficulty starting the vehicle, loss of power under stress, and sudden surges in engine power. If you experience these symptoms, it's advisable to have the fuel pump inspected and replaced if necessary.

Maintaining a fuel pump involves keeping the fuel tank at least a quarter full to prevent the pump from overheating, using clean fuel, and replacing fuel filters as recommended to prevent debris from reaching the pump.