I definitely need help on this!!! So I recently got a 1988 blaster and was told that the engine was recently rebuilt. So the problem is that the blaster only starts by bump/push starting it. Only once I was able to start it by kicking it over. I don’t understand what could be wrong. I checked compression and it’s good, I also put a spark tester to it and the spark tester lit up. I don’t know what to do next. I don’t know if it could be a timing,Cdi or fuel problem. PLEASE HELP!!!