Hello everyone, I have a 2011 sportsman 500 with around 336 hours and 4500 miles. This past summer an issue came about where if I run the atv at 3/4-full throttle for like 30 seconds or so, when I start letting off the throttle it starts bogging misfiring and backfiring for a few seconds then it gains its power back and runs normal, this issue can happen once on a ride or many times, I’ve cleaned the carb, and checked and made the proper adjustments to my valves, as well as put a new fuel filter, air filter, and spark plug in it and the problem still occurs, I’ve also tried unplugging my speedometer which didn’t help either. The cam seemed like it had good lobes on it, and I couldn’t find any cracks in my intake boot, my throttle safety cut off looks like it is all working properly as well, it act as if there’s an electrical issue, and it has fresh gas and is stored indoors so there shouldn’t be any water there. If anyone has any ideas please let me know because I’m stumped on this. Thanks!
