AndrewZ4MC said:Z4M-2006, Yes, BMW have already put in shells and oil pump but hasnt fixed the problem.
just got the bill as it stands at the moment £2,200 +VAT :thumbsdown:
I strongly recommend asking for the parts that they have replaced. The bearing shells do look a little worn but I don't see anything in your pictures or the events you have described that would suggest this to be the cause of your problem. Indeed, that the problem persists and is readily localised to the cams / followers supports that being the site of failure. It seems to me that they want more than £2k for failing to diagnose and fix the problem and instead performing what is at best preventative maintenance and at worst unnecessary work.
I suspect you problem lies entirely with loss of the case hardening of the cam followers and consequent wear of the cam lobes. I would want them to clearly demonstrate how the work they have done was necessary and how it has contributed to solving your problem. This is separate from your other well-founded complaints regarding the provision of an AUC warranty for a car that hasn't adhered to the service schedule. I think you have a strong case for the (?unnecessary) work that has been done being paid for by the BMW dealer and for the cams and followers to be replaced under warranty.
By the way, sorry for the rant but I feel strongly about this as well as feeling sorry for you about the bad luck and rough deal you've had.