I was just driving along in my 2001 3.0D X5, minding my own business when there was a sudden 'pop' followed by a loss of power and a cloud of black smoke from the exhaust. There was no indication anything was wrong, the temperature remained the same and a quick look under the bonnet reveals nothing obvious. There are no fluids leaking out from underneath.

I'll obviously have a closer look tomorrow but in the meantime does anyone have any ideas?

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Author and screenwriter. http://www.dougiebrimson.com

Owner of 2001 X5 3.0 D Sport, lover of motorbikes and follower of Brisca F1 stock cars and football.