I have an A3 2005 SLine Quattro 2.0TDI..90K FSH. I left it at a valet parking for two weeks whilst on holiday, there was no excessive mileage, about 15 miles put on it. Since i picked it up it smokes (Greyish or Blueish) quite a bit on setting off in traffic and after idling at lights etc, never did before. New turbo fitted last November, timing belt changed at 45k by previous owner. Any solutions or theories will be appreciated!!