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Noisy Valves on BMW GS 1000

Noisy Valves on BMW GS 1000

Noisy Valves on BMW GS 1000

(OP)
I´ve just done a rutine maintenance on a Paris Dakar BMW motorcycle, but althought the bike is very smooth and delivers good power, the valves start to get extremly noisy as the engine gets hotter. I have checked the valve clearance more than enough and always get the same reading that its OK, so if everything is up to spec why are the valves still making so much noise.
Pedro

RE: Noisy Valves on BMW GS 1000

No one want's to jump in, so I'll give you a couple of things that happened to me.  I had a BMC A series engine long ago that sounds like  your BMW.  It turned out to be worn out rocker  arms.  I replaced the bushes and surfaced both rocker tip and valve stem, replaced the rocker shaft and all the noise went away.  On another occasion, I had a Lotus Twincam that had worn tappett bores, resulting in intermittent valve train noise.  I hope this helps, I know that strange noises can drive you nuts.        

Rod

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