ello mate, ive got a similar prob......my rs especially if its not driven for a little while smokes sometimes........theres no smoke at all on start up it usually happens after around ten mins of driving.......my smoke is thick white smoke........comes pooring out like im driving a steam engine...........if it doesnt clear straight away then i park up and turn the ignition off.......after bout 15 mins ill start her again and nothing what so ever happens, drive round for the rest of the night and shes perfect.

ive checked for play in my turbo......absolutely perfect no play at all, checked all the boost pipes and theyre clear also. i checked the turbo itself in case its leaking oil between the compressor housing etc and perfect. i had a compression test carried out and theyre also perfectly fine.

ive recently changed my valve stem seals, valve springs, retainers, and followers ( they were failing slighty ). that was two days ago now and apart from when i had just finished changing them ( slight smoking, not sure if it all needed a few miles to settle ??? ) all has been well ( fingers crossed ). i only now get a very slight puff of normal smoke on hard acceleration and gear changes at full throttle which im sure is normal........does any of this sound familiar to your prob ????.

regards, dave