Luckylukie
Member
I dont know, apparantly my normal mechanic staryed it then turned it off quick. But I was local when it happened so I drove it back, gently.
Its an auto, squeeking like a fan belt slip was heppening on easing off the excelerator, then the engine got louder and turned into a knocking sound.
Tensioner failing on the side of the engine?
Or maybe one of the other pulleys?
Nodge68
Well-Known Member
Sounds like the crankshaft drive pulley has started to fail. It's a common problem which shouldn't cost more than £150 to sort. Providing you use the OE Corteco pulley, the noise will go away for 100k miles.
No need to change the engine at all.
Find another mechanic, who knows the issues with these BMW engines.
Luckylukie
Member
Thanks everybody out there for this input.Sounds like the crankshaft drive pulley has started to fail. It's a common problem which shouldn't cost more than £150 to sort. Providing you use the OE Corteco pulley, the noise will go away for 100k miles.
No need to change the engine at all.
Find another mechanic, who knows the issues with these BMW engines.
Im in a world of pain right now and this sounds better than what my normal mechanic is saying.
Luckylukie
Member
Thanks buddy. Me too
Luckylukie
Member
Thanks mateCare to share?
If it's a TD4, the engine isn't known to fail, other than the odd crankshaft breakage.
