Hey guys my buddy has got a Polaris 325 Magnum and we spent a lot of time to get the bike running and when we finally got it running right he let a friend of his ride it and apparently the carburetor had started leaking fuel and he kept riding and then when he stopped and walked in his barn when he came back outside the four-wheeler was up in flames So now I'm just asking y'all because I have another Polaris magnum frame plastics everything with a knocking motor I took the motor off and put the one that was in the fire on the other one and now all I'm getting is backfiring out of exhaust and intake any idea on what it could be maybe valves I know it's not the stator because I already replaced it because the wires were burnt any help would be awesome p.s I have check the woodruff key