At which location will coolant usually boil first in an overheated engine?
A) At the point in the cooling system with the highest pressure.
B) Outlet (pressure side) of the water pump.
C) Inlet (suction side) of the water pump.
D) In the radiator.

Question

Quizplus · Accepted Answer

Coolant usually boils first at the inlet (suction side) of the water pump in an overheated engine because this point has the lowest pressure in the cooling system. Lower pressure lowers the boiling point of the coolant, making it more likely to boil in this area.

At Which Location Will Coolant Usually Boil First in an Overheated