I'm still new to the tdi but since I've owned it, intermittently I'll have a long crank/stumble and a cloud of white smoke on inital start up. Its a 2002 jetta with an auto and most times its ok but still ramdomly long crank. This has happened since I got it but I have (not to eliminate this issue) resealed the injector pump, replaced t-belt and water pump, new tires, air and fuel filters, etc etc. I live in southern florida so its not real cold at any time and this has happened even when warmer out. Any help would be great. I'm thinking the anti shudder valve is sticking or the valves are leaking oil down and compression isnt great after that or something.