A Fuel Pressure Regulator is used to maintain proper and consistent pressure for the injectors, during a variety of driving conditions. Because, Fuel Pressure that is too high, can cause engine misfiring and increase vehicle emissions. Where as Low pressure, can cause poor vehicle performance and hard starting.

Engine Fuel System – Proper Testing Procedures With Solutions
So, the engine fuel systems job, sounds pretty basic. It delivers fuel from the fuel tank, to the engine. Testing the engine fuel system, is relatively simple. Engine fuel system consists of, the filler hose, […]