أنشئ حسابًا أو سجّل الدخول للانضمام إلى مجتمعك المهني.
Considering that the engine is in very good condition - while the material entering the engine (combustion chamber) is Petrol + air only !!!
The reason for the release of water vapor or water drop from the vehicle exhaust is H2O
In my opinion, it is no problem in car exhaust chemically when you observe water that means fuel didn't burn completely. However, maybe catalyst that uses in the source has problem.