What engine does it have exactly and year?
Any missfiring during or when this fault occurs or even engine warning lights?
Any signs of fluid loss in regards ***** ***** etc?
What checks if anything has been inspected or tested so far?
It is a diesel 2L D4D. 2007. No engine warning lights, no problems with coolant. Once it is started and driven it usually starts no bother. Just a problem if it is lying over night etc.
..there sorry delay..
Ok..givin what you have described..the best place to start here ideally id say would be the glowplugs/glowplug system on the car..givin that the problems only occurs when left overnight..may suggest a fault with or one of the the glowplugs at start up creating the smoke..so certainly have that checked out..Another possible white/grey is in-complete fuel burn.leaky injector overnight will give off this smoke..a leak down test on the injectors would likely show that up...