N63B44A valve stem seals
2010 750li with 145k miles. Smokes at startup n at idle. Will be pulling heads to replace valve stem seals, timing chains n guides n anything else that may be damaged
Pulled out engine last Saturday the dynamic drive system seemed a bit intimidating to deal with at first but it came apart easily
A piece of the blow off valve on bank 1 turbo had broken off n was sitting in the intercooler
Both turbos have damaged wastegate valves which I’m sure cause a horrible rattle
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