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Exup valve. What noise does a loose one make?
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Almost since as long back as I can remember my bike has been making a noise that I’ve been unable to locate.
The closest I can get to describing it is that it sounds like the rattle you get from the clutch basket when you pull the clutch in.
Its not overly loud but I do notice it up to around 30 to 40mph. It might be there at higher speed but its drowned out by other noises.


Its a constant tone and doesn’t change with road speed or if the clutch is in or out.
I’ve checked just about everything from fairing panels rattling , through from mudguard resonating to chain tension.
I did at one point think it was the front tyre as it seemed to disappear after I replaced it, but I soon heard it again.


The one thing that’s just struck me was that perhaps its no more than a loose Exup valve rattling  away.
Could it be this? I’ve serviced it regularly so I know its free. I wonder if its too free!


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Exup valve. What noise does a loose one make? - by NitramA - 19-06-21, 06:41 PM

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