In order to purge air from a diesel engine cooling system after reconditioning, which of the following is recommended?
A) separate the upper radiator hose
B) remove the radiator drain plug
C) remove the thermostat housing
D) vent circuit by cracking a water manifold plug

Question

Quizplus · Accepted Answer

Venting the circuit by cracking a water manifold plug is a common method to purge air from a diesel engine cooling system after reconditioning. This allows trapped air to escape as the system is filled with coolant, ensuring proper circulation and cooling efficiency.

In Order to Purge Air from a Diesel Engine Cooling