XR650r Engine NOISe BUZZING at high RMPs

4 replies to this topic
  • Doharris90

Posted April 27, 2007 - 09:53 PM


I have an 2005 650R (uncorked w/ edlebrock carb)and when I got it the engine ran smooth and clear. The bike only had 250 miles on it. The valves were adjusted at that time. I have put on another 800 miles and I adjusted the valves and checked and rechecked them. I don't have the book so I guess it could be that I adjusted them wrong but I have worked on xr 600rs for years and understand how to adjust valves.

The problem is this, when I rev the bike about 50% there is a noticable buzzing coming from what I would think is the top-end. I took it to a mechanic friend of mine and he said not to worry about it. Well I am worried only because it did not make that noise before and I adjusted the valves because I started to hear a slight buzz. I can hear the Buzz while riding at high revs and it is driving me crazy. I keep thinking that something bad could be happening to the bike.

any ideas. Does anyone else have these same symptoms?

  • Billahjack

Posted April 27, 2007 - 09:59 PM


My kickstarter mechanism buzzes until the bike gets warm sometimes.

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  • Doharris90

Posted April 27, 2007 - 10:03 PM


That is good to hear.. Mine does the same but that goes away after a bit right?
This sound is not going away and I am really getting concerned. I have been wanting to put in a stage 2 hot cam and maybe now is the time.

  • abby

Posted April 28, 2007 - 08:11 AM


The pipe guard will sing too, so do some of the metal skid plates.

  • Thumpmeister

Posted April 29, 2007 - 11:58 AM


Pipe guard and skid plates are the most common. I have a BD alum plate on my brp, and in high-mid range the thing rattles REALLY bad...

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