Jump to content

Yz250f surging right before top out in 5th

Recommended Posts

Hey guys I was riding my 2007 yz250f and it idles perfect and runs perfect except in 5th gear, once I'm gasing it trying to top it out it will sputter/jerk a few times and then top out, also I have a vortex high comp Piston and I run 93 premium I don't know if that has anything to do with it any ideas??? Jetting, weak spark??? Any help is appreciated

Share this post


Link to post
Share on other sites

How high is your compression?

 

I think the main is a good place to start, if going up a size makes t worse, go down a size. It’s easy and cheap enough to do and it’s a good starting point.

Share this post


Link to post
Share on other sites
How high is your compression?
 
I think the main is a good place to start, if going up a size makes t worse, go down a size. It’s easy and cheap enough to do and it’s a good starting point.

I'll check it and yeah good point thanks !

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:


×