hi sorry for late reply
i have the 300tdi its been smoking for a while now kind of grey/blueish colour there was a bang down near the centre console and the heaters stopped working and a bit later it banged again and we had heat finally got it home and the next day it wouldn't start there was oil on the the back injector so i took the head off and couldn't really see much im going to try a new head gasket today also getting my head skimmed the only thing is which gasket to put on as its a 3 hole gasket already on?