I just bought a 2004 ninja 250 not new to riding been on bikes since i was 16 dont do much freeway driving so i fiq it would be a good bike around town easy to maneuver het thru traffic its a great bike i love it but im having trouble with the idle more so wen its cold i started it this morn out the choke at half way st sat there at idk 3 grand for like 1 min then died started right back up so i just held the throttle til it warmed up drove it 4 miles to work wen i got there let go of the thottle and it died fig i would throw some seafoam in it i know it sat around for quite awhile

 

Welcome to KF.
Sounds like the most likely culprit is a partially plugged pilot jet, probably from gas varnish. Give the seafoam a try. It works for some folks. But if that doesn't do the trick you may be in for pulling the carb and cleaning, or better yet just replacing, the pilot jet.

 

thank you filled up the tank put the seafoam in it started to leak so i took the bolt out of the fairing to see where it was leaking from lol gas came pouring out of the bolt hole didnt know the bolt goes into the gas tank when its on reserve it doesnt leak found where the leaks coming from lol