Technician A says cooling system pressure is regulated by the pressure relief valve in the water pump. Technician B says cooling system pressure is regulated by the radiator cap. Who is correct?
A)A only
B)B only
C)both A and B
D)neither A nor B

Question

Quizplus · Accepted Answer

Cooling system pressure is regulated by the radiator cap, not by a pressure relief valve in the water pump. The radiator cap allows the system to maintain a certain pressure, and if the pressure exceeds the cap's rating, it allows coolant to flow to the overflow tank, thus regulating the system's pressure.

Technician a Says Cooling System Pressure Is Regulated by the Pressure