HEADS UP!!!

Site upgrade in progress... Core site functions are working, but some non-critical features/functions will be temporarily unavailable while we work to restore them over the next couple of weeks.

Please post any bugs you encounter, but before you do, check to see if it's already listed.

Thanks for your patience while we work to improve the community.

Sign in to follow this  
Followers 0
Jake_Ridenour

YZ 400 high idle

3 posts in this topic

I know this is an old topic but my search has not quite come up with what I want. I have a 98YZ 400 when you crank the throttle open after its warm sometimes the throttle shuts and then I get a high idle for 10 seconds or so and then it drops to normal. cleaned carb, adjusted cables, checked for leaks blah blah blah. What in the H am I missing!!! Please help tters!!!

Share this post


Link to post
Share on other sites

Hanging idle means lean jetting. Go up a size in pilot jet and main jet and adjust your fuel screw. Probably cooler weather there now, right?

Share this post


Link to post
Share on other sites

Yep that was it. Ya its only 40's here. needs a fatter pilot but I cranked open the screw and that got it. Thanx though.

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

Create an account

Sign up for a new account in our community. It's easy!


Register a new account

Sign in

Already have an account? Sign in here.


Sign In Now
Sign in to follow this  
Followers 0