Buzzing Sound.....

[mhallock]

2001 Interstate. 114,000 one owner miles. Bike has been parked most of the winter months. Pulled in after a short ride and heard a buzzing sound from behind the timing belt cover. Don't hear it when the bike is first started, but once it is warmed up. Timing belt was changed at 93,000 miles by reputable mechanic. Any ideas?? Thanks in advance for your input.

Mark

[Valker]

Buzzing usually means something metal is loose. Have you checked the "Buzz Bolt"?

[franco6]

 Buzzing sound could be a loose screw or as in my tourer the belt tensioner bearing singing .Replaced it with anew one as well as a new belt . was not that old but ...

[Jess from VA]

Buzzing usually means something metal is loose. Have you checked the "Buzz Bolt"?

Here's a link on the buzz bolt.  

IF this is your problem.  If it's the buzz bolt (actually it's the buzzing spacer the bolt passes through), it generally gets worse with RPMs, if your exhaust doesn't cover the noise.

http://www.valkyrieriders.com/shoptalk/buzz.htm

This is harder to reach on an Interstate because the bolt is inside the pod.  You can reach it with a ratchet extension and Ujoint, but if you slip cranking hard, the pod is easy to crack/damage.

It's not where the finger is pointing, it's right above his first knuckle, the rear bolt.  The spacer tube between the frame (the bolt passes through) gets loose enough to rattle/buzz.  Crank hard on the bolt to capture the tube.