Hi everyone.

I couldn't find a straight answer anywhere about the noise I have on this car (2006 e91 330xd).

1. The ticking sound, at the very front of engine, is it timing chain?
Opening the oil cap, there is no clicking in there, quiet.
When going to let it changed, new sprockets also would be needed? Most of the kits are without sprockets.

The loud click noises heard in this video are also odd, but when shutting the engine off, it is still heard for a while, there is something hot expanding I guess.


Video link: https://www.youtube.com/watch?v=CwOG1bvisBs

Thanks a lot for your time.