Originally Posted by cmyX6go

My dad has a Touareg V10 TDI. He is experiencing sporadic excessive exhaust. It comes and goes. It happens at different times, he can be taking off from a light or cruising on the highway. The smoke is white, but overwhelming. VW, of course, says vehicle is operating at manufacturers specifications. Any ideas? It's a 2007. He has a service appointment tomorrow at a different dealer. The one he used to go to only had one tech that was familiar with diesels. I think his car is a white elephant here in the states. My brother seems to think that it happens when there is some kind of build up that needs burning off.

Thanks