For a few weeks now my 07 has been idling pretty low. It takes a little while to warm up, but generally runs fine. On multiple occasions I've let it warm up and adjusted the screw to where it idles ~1300. Then while riding, I come to a stop and the rpms just sit around 3000. I then have to readjust the screw and when I get it fixed it goes back down to between 900 and 1000. I tried running some seafoam through it, but it didn't really help. Should I go ahead and clean out the carbs?
Check the boots connecting the airbox to the carbs. I had similar issues and one of the boots was only half attached and allowing way too much air into the engine. I did a carb clean and rejet at the same time I found the issue, but all said and done the bike is running 100% better.
Also, it's 'warmed up' after about 20 minutes of riding.
That's when you should set idle speed, anything before that will get you high idle after a good ride.
Is that what you've been doing?
don't bother with anything unless you've checked your valves
Quote from: Atesz792 on May 14, 2015, 01:34:12 AM
Also, it's 'warmed up' after about 20 minutes of riding.
That's when you should set idle speed, anything before that will get you high idle after a good ride.
Is that what you've been doing?
Yeah I usually ride for about an hour before messing with the idle screw.
Plus one on the valves, the newer bikes were leaner from the factory, and any mods to intake or exhaust dont help. Mine burnt in around 16k miles and confused the hell out of me for awhile. Make sure you check them when its bone cold, at least a day after riding it.
I had the same issue with my bike not to long ago. That came down to badly synchronized carbs. How this could've happened to you i dont know, but try this.
When idling, disconnect a spark plug, and listen to the rpm drop. Then reconnect it and disconnect the other one.
If one rpm drops harder then the other, your carbs are probably out of synch.