Jump to content
Sign in to follow this  

jetting at high altitude-8500' for '99 yz400

Recommended Posts

I was looking for some advice about main/pilot jet sizing, needle positioning, air mixture screw placement ect. The bike now has a bad hesitation when fully opening the throttle off idle. I have played around around with moving the needle up and down as well as trying to rejet the main down to 158-165, but with little success. I am sick of thumping into the bars, and my wife is getting concerned about the number of shots to the balls I am taking, so any help with this rather personal problem of mine would be greatly appreciated. Thanks in advance.

Kevin in Colorado

Share this post


Link to post
Share on other sites

Create an account or sign in to comment

You need to be a member in order to leave a comment

Reply with:

Sign in to follow this  

×