I have an A4 Avant AVF 1.9TDI Quattro Avant. 2004 plate.
I have always had, since owning issues with very rough running once started for 10-15mins. Having exhausted everything I can, apart from having the injectors sonic cleaned and seals replaced which is my final option.
The thread about what has happened can be viewed here:
Running Issues at Cold
Since then I have noticed some other issues.
When the car rough idles at the start, I get quite a lot of smoke. This smoke appears to have a blueish tinge to it. I get no other smoke whilst running and even booting it. Only when you start and it rough idles for 10secs or so.
I have also noticed now that the oil is being eaten, having topped it up 3 weeks or so ago, its down below minimum again!
So any ideas or help appreciated.
Would air in the system, which was one of the first suspicions through the tandem fuel pump (and gasket changed to no effect), cause blue smoke? Presuming that is caused by oil burning to quickly? Is that because it's leaking somewhere.
Somone mentioned oil seals? where are these and could these be an issue? Expensive? It has been on longlife servicing before I owned it.