YZ400 Whining

1 reply to this topic
  • buzzfin

Posted July 07, 2008 - 11:54 AM


So I'm out on the trail yesterday in 95 degree heat, riding through a tough woods section... Get the back tire on my YZ400 hung up on a large step-up with tree roots and rocks. Manage to stall the bike trying to get up and over, and right after it stalled, I hear a high-pitched whine coming from the motor or radiators which lasted for about 3 or 4 seconds. Gave it some time to cool down after that and it was fine the rest of the day. Any ideas? Engine overheating? Clutch overheating? Never heard it whine like that before...

Visit the ThumperTalk Store for the lowest prices on motorcycle / ATV parts and accessories - Guaranteed
  • grayracer513

Posted July 07, 2008 - 12:01 PM


My guess is it was venting cooling system pressure.

Related Content


Join Our Community!

Even if you don't want to post, registered members get access to tools that make finding & following the good stuff easier.

If you enjoyed reading about "" here in the ThumperTalk archive, you'll LOVE our community. Come join ThumperTalk today!

The views and opinions expressed on this page are strictly those of the author, and have not been reviewed or approved by ThumperTalk.