Technician A says that on fuel injection systems, the fuel pump relay carries the high amperage current for the fuel pump. Technician B says that on fuel injection systems with a return line, the fuel pressure regulator is located after the fuel pump and before the fuel injectors. Who is correct?
A) Technician A only
B) Technician B only
C) Both technicians
D) Neither technician

Question

Quizplus · Accepted Answer

Technician A is correct because the fuel pump relay is designed to control the high amperage current needed to operate the fuel pump. Technician B is incorrect because the fuel pressure regulator is typically located after the fuel injectors in systems with a return line, not before them. It regulates the pressure of the fuel being delivered to the injectors and sends excess fuel back to the tank via the return line.

Technician a Says That on Fuel Injection Systems, the Fuel