yo i love 4 wheelers and we went ridin yesterday i was on the predator and myfriend on the other predator ,my friend who wieghs 90 yea he is 15, lol , but anyways we were going down this straight away and we were both topping the engine ,at the end of it we stoped and cut the engine and rested for a few, while we were resting there was this burned smell coming from his 4 wheeler, he sat for 15 min to let them cool for a while, when we started them back up his would not start , it took like 4 times to get it started, when were started to try and top it out back down the straight it kept going fine and then it started to choke up and not go close to its top speed he was way behind me when i was at the finish. He finaly got there and as soon as he let of the gas it quit, it had plenty of gas and oil but there was that strong burned smell again, we drove back home slow and it made it back my dad looked at it and from the looks of the basic stuff it was fine, could it be the trans? or the engine? let me know, these were both the same atv's and have only had them for a year, they worked the day before fine, idk whats going on with the second one