What could be wrong with my Kinroad Runmaster Sahara 250cc dune buggy?
I bought a Kinroad dunebuggy from a guy in Queen Creek, AZ for $1000. It is a yellow 2-seater with a 250cc engine and unifilter. It ran perfect when we tested it, but it has been downhill from there. I drove it around at home on the street for about ten minutes, then- uh oh. I was driving along, relatively slowly, when the gas pedal quit working. As in, it wouldn't make the cart move. When I pressed the gas pedal, it made the engine rev very loud, then stopped when I released. By now the cart was at a full halt. I pressed down on the brake pedal, then let go. That seemed to do it. It happened again in less than 30 seconds, but quickly subsided. I don't know if it was the braking that did it, or if that was just a coincidence.
So that didn't happen again. I drove it around for a few more minutes, then shut it off. I came back to it less than an hour later. It started, I put in forward, and then when I pressed the gas- it died. No go. I tried again. No go. Finally, i started it, then revved it once for about 5 seconds in neutral. Then, when I put it in forward and gassed it, it went. It rode fine for a little while. I shut it off.
When I came back and started it up- same as before. Whenever I gassed it, it quit. Finally, for whatever reason, it went. That lasted for about ten seconds. Then it quit. It hasn't started since, after maybe 20 more tries.
So- any guesses as to the problem? Any help would be greatly appreciated.