Originally Posted by Evil///M
Timing BELT??? No single BMW uses a belt to drive their valvetrain, they are all chain driven. If it were me I'd look into this matter myself...
But then again it could be possible that the chain might have jumped, I'm pretty sure the tensioners get a little help from oil pressure?
...there is a play there but not enough for a full jump. If the tensioner is the cause this is highly unlikely to happen suddenly and to go unnoticed. Doesn't have to do with the oil leak in my opinion.
It is a very strange story. Knowing what BMW &^%$*&^ technicians are capable of (at least here in MA) nothing would surprise me.