Technician A says in a returnless fuel system, the pressure regulator is mounted on the fuel rail. Technician B says in a returnless fuel system the pressure regulator, fuel sender, and pump assembly are combined in one unit inside the fuel tank. Who is correct?

Question

Quizplus · Accepted Answer

In a returnless fuel system, the pressure regulator is typically integrated with the fuel pump assembly inside the fuel tank, not mounted on the fuel rail. This design reduces the need for fuel to be returned to the tank from the engine, improving efficiency.

Technician a Says in a Returnless Fuel System, the Pressure