Hello, a month ago i had an accident with my atv and by now i fixed it, since then it backfires and sputters like crazy while going around(in drive), i cleaned the carburretor, changed the spark plug and filters but it still does it, it doesn't have any problem while in neutral but once you start moving it starts firing and doesn't want to go over 3800-4600 rpm exactly like hitting a rev limiter. Could any of you know the cause, or maybe some fixes i should try?