I just got one of this bikes out of a yard; it must have been sitting outside for at least a couple of years. I put a new battery, added some oil, kick start it; and engine started and died, took it around the block; at half way died again and had to push it back home, while trying to remove the battery-possitive post-to work on something, touched body of bike and made spark, now when I kick start it does not start, what went wrong?