Car Repairman Interview Question:

Explain me what Is The Reason For Emitting The White Exhaust Smoke During Start Of The Vehicle? How Will You Prevent This?

Submitted by: Muhammad

The main cause of white smoke is water or anti-freeze entering the cylinder, so the engine starts to burn it with the fuel. That white smoke is nothing but steam.

Prevention measures: There are special gaskets i.e. head gaskets and primary gaskets that prevent the anti-freeze from entering into the cylinder area. This anti-freeze will produce a white steam which will accumulate at the tailpipe area.
Submitted by: Muhammad