The car is new, at about 400KM driving non stop, it expelled out white smoke,(like a cloud) It was at the total milage of 1000km, and the exhaust pipe had yellowish substance sticked internally seen from the rear as if it is some sulphur staff. Yesterday driving in the city (milage 1300km) did the same, but the sulphur like yellow sustance is no more there the pipes are clean. Any one can explain why? and no mulfunction reported on board computer.
Thanks
vigor662

White smoke is oil, unless it is steam.
Change the oil?

White smoke is oil, unless it is steam.
Change the oil?

White smoke is an indication that there was water in the combustion chambers. The white "smoke" was steam. This can be caused by alot of things from simple condensation in the cylinders from sitting (this usually only smokes during start up), to water in the fuel (condensation in the storage tanks), to a head gasket going bad (yes it can cause this problem to happen intermittently).

I would suggest talking this over with a reputable auto shop and see what they say. More then likely they will want to check the car over before giving you any real answers. But I would suggest you do it now while the problem is small, before it develops into something worse.

Good Luck