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Discussion Starter #1
Help. My 02 954 has developed an intermittent knock from somewhere in the engine. Its not evident when the engine is cold but gets louder as the bike gets hotter. Pulling the clutch in doesnt make any difference. It does go away as soon as you put some load on the engine. So its can be heard at tickover and when you rev the engine it shows up as the engine revs drop. It also seems to come and go and is not regular.
Any ideas?
 

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Discussion Starter #3
Mines definitely not valves (valve gaps checked less than a month ago). Its also to much of a knock rather than a rattle/tick. It definitely seems t oget louder as the oil gets hotter.
 

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Sounds like a rod bearing to me. Mine was doing that. I split the case and checked the bearings. Ended up replacing them all with the original size (the bearings were actually worn). Rechecked clearances and it was good.

The thing is you have to split the case to get to them, which sucks.
 
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