Under load, higher cylinder pressures and temperatures cause fuel to burn more completely, and only _____ should be observed coming from the engine exhaust system.
A)white smoke"
B)heat haze of hot air"
C)high hot air
D)grey smoke"

Question

Quizplus · Accepted Answer

Under load, higher cylinder pressures and temperatures cause fuel to burn more completely, and only heat haze of hot air should be observed coming from the engine exhaust system.

Under Load, Higher Cylinder Pressures and Temperatures Cause Fuel to Burn