Engine vacuum is largely determined by which of the following?
A)Engine speed
B)Engine load
C)Vehicle speed
D)None of the above

Question

Quizplus · Accepted Answer

Engine vacuum is largely determined by engine load, as a lighter load requires less work from the engine and therefore produces more vacuum. Engine speed and vehicle speed can also have some impact on vacuum, but they are not as significant as engine load.

Engine Vacuum Is Largely Determined by Which of the Following