Fuel system issues refer to problems that can occur within the components responsible for delivering fuel to an engine. Common issues include clogged fuel filters, malfunctioning fuel pumps, and dirty fuel injectors. These problems can lead to poor engine performance, reduced fuel efficiency, and difficulty starting the vehicle. When a vehicle experiences fuel system issues, it may exhibit symptoms such as stalling, hesitation during acceleration, or a decrease in power. Regular maintenance, including changing the fuel filter and using quality fuel, can help prevent these issues and ensure the engine runs smoothly.