I have an A3 sportback 2L TDI 170 2007. Intermitantly I get white smoke when idling at the lights. The exhaust fumes seem to smell rich and not like normal smoke if that makes sense. When I put my footdown it can momenterally lose power but once warm it seems to be fine. When i shut the power off and put my foot back down it seems to do it more often but again when warm its fine. I have had it plugged in and there ar no fault codes showing. I have been told it could be the EGR Valve? Hoping it wasnt the turbo...
Any help would be much appriciated