Thanks for your answer. You mean the primary problem is the pump? I think the primary problem is the wear and tear of the chain which is a known issue of the engine. That was the reason I was hearing it and thats the reason it failed. I don't think the primary reason is the oil pump or am I missing something?
hi.
bmw replaced the chain with a better version. I think your 2010 builded car had the old one inside.
The new replaced one is better than the old one, so I think there would not be any problems in the future.
Anyway you should order a new oil pump and swap it.
Also it would be nice to swap the bearing shells.....