Could someone help with this please. I have read a few similair threads and my CDTI 150 has the same problem. When you start the car from standing between 2-6 hrs, I get a lot of white-ish smoke for 5 secs, the car feels and sounds fine and starts first time. It does not do it first thing in the morning or if it sits for more than 6 hrs ish. The dealer said.... it could be condensation in the CAT or mistiming, they reset the ECU and said that might do it, but as you may have guessed I'm not convinced and it is still doing it. The car is a 2005 cdti 150 40,000 miles. I've only had the car for three months and it's my first diesel any ideas? has anyone had the same problem and managed to solve it?