2003 Ninjia EX250 High Rev Problem

[sushimixy2k]

I recently bought my bike used that has sitting for the past 2 years (3k miles). I am having idling problems. The bike must have full choke and if you give it a little throttle or take off the choke, it dies. I have also tried warming up the bike for several minutes with no prevail.

So, I took out the carbs, cleaned them, rebuilt them, and reinstalled them back onto the bike. I found no residual inside the carbs and they were pretty clean. I have also checked the gas tank for any rust but the tank is pretty clean.

After putting back the bike together, the bike wants to rev between 5-6k! The needle just bounces every so slight up and down. Once in a while, it will drop down to 3k and then back up to the 5-6k range. I have checked all the air hoses and the air filter is in place. I have also tried adjusting the idle but I cannot find a happy medium where the bike either revs high or dies.

Any suggestions? When I built the carbs, is it possible that I got the number of turns off on the jets when I rebuilt the carbs? A air leak that I don't know of? Is it just worth taking it to the shop and have them figure it out? If I take it to the shop, would it be safe for the bike to rev high when I ride it for the short distance?

Newbie Nick

[Hatch]

I would pull the tank and take a good look inside, pull and clean / replace the fuel filter. Check the petcock if your bike has one. If that doesn't help I would recheck the jet settings, resync the carbs. Also double check the carb boots for cracks and replace if needed.

[bmiller]

Yeah check those boots real good, and any vacuum lines. I've had a few do that to me when there was a vacuum issue. Malfunction with the egr type system Kaw has used in the past will do the same thing.