2007 honda recon 250 wont idle

[chadburgess2003]

Ok so I have a recon 250 that will not idle. It will rev up and go as long as u don't let it idle it will run fine. Fist thought to everyone I know would be the idle jet. Cleaned the carb and put a kit in it while I was there. Changed the spark plug as well. These carbs have that fuel cut off vacuum valve on it. If I take the line that's coming from the intake and plug it off it will idle just fine with no problem. I know its not how its pos to be but I just cant figure anything out on it. Im at a lost. Any suggestions would be appreciated. O Ive already checked the valves and also adjusted the air. Its got to be something with the vacuum operated valve whatever it is or does... Thanks.

[biggreen2010]

I'm working on a 2001, Recon 250 that wont idle either, it revs fine till you let off the throttle, but it backfires through the carb an exuast, so I'm going to change the cdi box, an then the coil, only reason,,,is because we have another one that runs fine, so ill just try them to find out if it fixes the problem, then if you think yours is doing what I described, this may be a fix for your recon, ill let you know

[Pure_Michigan]

Because it idles when you plug the vacuum line, it is exactly that - a vacuum leak. Check the valve that the vacuum line plugs in to. It is allowing air to flow directly through it. Probably a bad valve.