Fuel pressure is the force exerted by the fuel pump to deliver fuel to the engine’s injectors. Testing fuel pressure is a crucial step in diagnosing and troubleshooting fuel system issues. It helps determine whether the fuel pump is delivering the correct amount of fuel at the right pressure to the engine.
Maintaining proper fuel pressure is essential for optimal engine performance, fuel efficiency, and emissions control. Insufficient fuel pressure can lead to engine hesitation, stalling, or even damage to the fuel system components. Conversely, excessive fuel pressure can cause flooding, poor fuel economy, and increased emissions.