Fuel pumps deliver pressurized fuel from the vehicle’s fuel tank to the engine. Typically located inside the fuel tank or inline along the fuel line, they maintain consistent fuel supply under varying engine demands. Modern fuel pumps are electrically driven and utilize a roller-vane or turbine design to generate pressure. Electronic fuel pumps often incorporate speed control based on engine control module (ECM) signals for optimized performance and efficiency. Component failure can manifest as hard starting, stalling, or reduced engine power.