Fox Helix 150 misfire after warm up.

[petejeep]

Any help with this is greatly appreciated. I don't want to throw parts at it to find the problem. Anyone else had this problem? It runs great for about 5 mins. Once warmed up it starts to miss.

[BlackScorpion]

Any help with this is greatly appreciated. I don't want to throw parts at it to find the problem. Anyone else had this problem? It runs great for about 5 mins. Once warmed up it starts to miss.

It could be a number of things, a bad spark plug, a dirty carburetor or bad gas.