2009 vw touran 1.9tdi white smoke if idle for 10 minutes

[Carpcruncher]

Hi just wondering if anyone can help. My vw touran if idle for ten minutes or so starts to throw a bit of white smelly smoke out of exhaust more so when it is cold outside. Drives fine with no smoke at all and starts fine.

[mazzamark]

Has it got an aux heater?

[paintman]

Or is it just the water generated as a byproduct of burning diesel/petrol & is entirely normal?
As the exhaust system heats up it will also boil off what remained in it from your last usage & that which has condensed in it on this start-up.

Also the reason that cars that only do short journeys go through exhausts faster than those used for long distance as they never get hot enough to boil it off & rots from the inside.

Are you losing coolant for no apparent reason?

That said, it might be worth having your emissions checked just to rule out a fueling problem as unburnt diesel will show up as white smoke & causes can include injector timing issues, low compression, cold engine, faulty injector. Wii often make your eyes sting.

[Carpcruncher]

Hi thanks for the reply. No idea if aux heater! I will keep an eye on it. No coolant loss just smells and sometimes puff of smoke is still for a while but will get it checked out. Other people said they had the same so hopefully it is normal :-)