Blue exhaust smoke is noted from a vehicle when the engine is running. Technician A says this could indicate a serious engine problem. Technician B says a small amount of blue smoke when the engine starts is normal. Who is correct?
A) Technician A
B) Technician B
C) Both A and B
D) Neither A nor B

Question

Quizplus · Accepted Answer

Blue exhaust smoke typically indicates that the engine is burning oil, which could be a serious problem. Technician A is correct. Technician B is incorrect because even a small amount of blue smoke is not normal and could still indicate an engine problem.

Blue Exhaust Smoke Is Noted from a Vehicle When the Engine