i know a guy that had the same problem with his kawasaki, and he could never figure out what was wrong, and i told him to replace the plug, put higher octane gas, and get super moto oil to mix with it !!! that helped out a lot, but it still wanted to die on him !!! i told him to just run the hell out it !!! he went and put a new carb and jet kit on it, and that fixed his problem....i have a 92 rmx250 that runs like a bat out of hell, and mine wants to die on me sometimes, and is hard to get started, but it has a big jet kit on it...i have to crank it a few times and then kick the hell out it and it will start on the second time !!! i've been in 5th gear and pulled the front wheel off the ground at about 85mph, and it scared the hell out of me !!! lol, but i wouldnt ride another bike unless its an oler model suzuki !!!
if u need to know anything about ur bike or about older model suzuki's, juss holler at me and ill be glad to tell u anything about them !!!