Yz125 engine noise


7 replies to this topic
  • Cmc681

Posted 12 August 2009 - 07:57 PM

#1

Alright so my '06 Yz125 has this weird noise coming out of the motor. I thought it was something in the clutch and after taking apart and inspecting many times I have come to the conclusion that the clutch isn't it. It's really an indescribable noise, not a grinding, pinging, scratching or anything like that. The bike will be running, not in gear and sound fine then the noise will start and either just go away for a minute or go away when I put it in gear. The bike also rides fine it just makes the noise when not in gear. I am going to try to take it to the shop tomorrow but I was just wondering if anyone has had this problem. Thanks.

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  • RBYM

Posted 12 August 2009 - 11:21 PM

#2

My 06 YZ125 makes a whining noise in neutral and only neutral, it is almost undetectable though and it is brand new also. I think it is normal.

  • MOTOPHILE

Posted 13 August 2009 - 10:49 AM

#3

Could be the main bearings about to go, and only make a noise (so far) while under a load...

  • scooter042

Posted 13 August 2009 - 08:15 PM

#4

Is it a rumbling whirring noise with a bit of diesel motor sound? If it is just go ride. All my 2 strokes have had that noise until I pull in the clutch or put it in gear.


YAY! 100 posts...
booo. not half full. wanted to be at half tank by now. ...must...try... harder.

  • Cmc681

Posted 13 August 2009 - 08:33 PM

#5

Would the noise go on and off? Because now that I think of it it is a kind of like that.

  • scooter042

Posted 13 August 2009 - 08:38 PM

#6

It could go on and off. Does it get quieter when the clutch is pulled in?

How many hours on it and when was the last oil change?

  • RBYM

Posted 14 August 2009 - 12:43 AM

#7

Is it a rumbling whirring noise with a bit of diesel motor sound? If it is just go ride. All my 2 strokes have had that noise until I pull in the clutch or put it in gear.


YAY! 100 posts...
booo. not half full. wanted to be at half tank by now. ...must...try... harder.


Same here! :thumbsup:

  • Cmc681

Posted 17 August 2009 - 08:10 PM

#8

No the noise doesn't change with the clutch or rpm's. I took it to the shop and the tech didn't know exactly what it was. I am going to split the cases to inspect since that's the only thing I can do.





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