I'm trying to get my Super X back on the road after a long sitting. I cleaned the fuel injectors, put in fresh new gas, and a new battery. It now starts, but has trouble starting, backfires, and stalls. If I give it some throttle, it will stay running until it heats up, then it will stay running. But only until I get to the first stop sign, then stall. Where should I look First? it has Fresh new gas, the fuel line is clear, clean injectors. Is it a bad sensor??? PLEASE help, I want to RIDE!