running rich (too much fuel)
For steam to come out the exhaust you probably have a bad head gasket or a cracked head. If the turbo had an oil seal fail it would cause blue smoke to come out the exhaust.
Black smoke is a indication of an overly rich Fuel/Air mixture. Blue smoke is oil burning.
blue smoke is caused by oil burning in the igntion chamber. oil gets there thru bad oil rings on pistons,or bad valve stem seals in the head,
Cars do indeed produce exhaust, but they are not the only source of exhaust which can come form other forms of transport, house boilers and factories.
Yes, this is simply showing your car is working, however, what SHOULD'NT come out of your exhaust pipe is red flames. If that is what's coming out, I'd check with mechanic. In general, Blue smoke, engine oil. Black smoke, excess fuel. White smoke, engine coolant.
Smoke can come from several things. White smoke when first starting on a cold day is normal. Black smoke indicates the wrong fuel/air mixture. Blue smoke indicates that the engine is burning oil.
rings are bad
your burning oil, either the rings are bad or your valve stem seals are bad.
If it blows blue smoke when starting up, that is usually the valve guides need replacing. If it constantly blows blue smoke, you are looking at piston rings. Either way oil is getting into the combustion chamber. If it's valve guides, you need to have the heads looked at, if it is rings, the bottom of the engine needs to come out.
Blue smoke is burning oil.Blue smoke is burning oil.
if it is white smoke engine need to rebuilt.
White smoke means head gasket, cracked head or equivelant.