Sure, i will post update. I buy 5 years ago an 730LD from a dealer witk 180k on clock, also with warranty and after 2 weeks the timing chain needed replacing, they replace it without any problem. Also from what i saw all over the internet the Audi A7 3.0D engines they are noises, so don’t know for sure if it’s the timing chain or something else, the previous owner told me that the crankshaft pulley is moving and need replace it, can this be a cause?