wr450 noise



12 replies to this topic
  • Berrey775

Posted March 28, 2016 - 09:06 AM

#1

Anyone out there know what a high pitched whining type noise would be.

Only seems to happen after I get off the gas and coming to a stop from hard acceleration??

Bike is a 2009 Yamaha WR450. Any help would be greatly appreciated.



  • cjjeepercreeper

Posted March 28, 2016 - 09:22 AM

#2

High pitched whining noises are often from a bearing on its way out.



  • Berrey775

Posted March 28, 2016 - 01:10 PM

#3

That's all good and thank you very much,  but the noise is still there sometimes when I am stopped. high pitch squeal whine. goes away after stopping.



  • Krannie McKranface

Posted March 28, 2016 - 01:17 PM

#4

That's all good and thank you very much,  but the noise is still there sometimes when I am stopped. high pitch squeal whine. goes away after stopping.

 

Well which is it



  • rah7777777

Posted March 29, 2016 - 04:49 PM

#5

Not talking about the whistle'ish noise from the carburetor by chance?
Just does it for a few seconds on decel. Think I read it was the slide plate that makes the noise and its normal.

  • Berrey775

Posted March 30, 2016 - 05:38 AM

#6

yes, that would be the noise. Drives me nuts. Is there anything I can do to eliminate this noise?



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  • Berrey775

Posted March 30, 2016 - 05:42 AM

#7

I thank everyone for responding. Still a little new to this and when comes to repairing my bike, sometimes I need a lot of help. So thank you to you guys.



  • Krannie McKranface

Posted March 30, 2016 - 06:45 AM

#8

yes, that would be the noise. Drives me nuts. Is there anything I can do to eliminate this noise?

 

The 'carb whistle' noise is one pitch, and not very loud, and only happens at a certain point of throttle opening.

 

It's usually a very mellow sound, and not a 'high-pitched squeal', so I'm not sure that's what you are hearing.

 

The slideplate has a hole in it like a whistle, hence the whistle sound.



  • GreenRide

Posted March 31, 2016 - 05:36 AM

#9

Mine started to do that "turbo" sound after I cleaned it and changed a couple of jets for new ones. As far has I know its normal.

  • ttreewalkerr

Posted March 31, 2016 - 04:42 PM

#10

Mine does it faintly,, like a turbo sound.

  • rah7777777

Posted March 31, 2016 - 06:58 PM

#11

Mines a decent whistle/squeal sound but doesn't last very long. When I first bought the bike it really had me scratching my head.
Now I don't even notice it

  • Berrey775

Posted April 05, 2016 - 06:59 AM

#12

Sometimes the noise is not heard, other times pretty loud and lasts for 30-45 seconds. I just don't know. Everyone says its normal, just makes me wonder. Thank you to all who posted. Truly appreciate it.



  • 450crazy

Posted April 09, 2016 - 09:19 AM

#13

My 2015 does the same thing almost sounds like the low fuel beep but it's not. Only on decel or going down hill or at least that's when I hear it. It's pretty annoying




 
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