[cracker boy]

I removed my battery for ice racing before I knew not to. Everything seemed fine until I went to the track and did some jumping, then all of a sudden right after jumping it started to die in first gear and low rpms. Now it idles just fine and warms up fine but as soon as you turn the throttle it dies.Checked carb every things good but it is getting worse and does'nt want to run.Any ideas?Maybe coil.