89 3pg. Cuts off when running for a while

[goat124]

the cart runs great for a few miles and does great till I'm thinking the muffler gets hot and it chokes the motor out. I have checked fire fuel and all that and it's all there. I pored my drink on the muffler and it took off and ran for a few blocks and the same thing so I did it agian it ran and shut off a few more blocks. I unbolted the muffler from the header pipe and it ran great on the way home. but I did notice after it got hot right before it cut off it had a run on condition with no throttle control sometimes but it was all most a 100 degrees out when this happens. the spark plug is the right color and everything not too ritch not to lean. correct heat range on it also. I did clean the muffler out by fire a few months ago but I don't see how it could be clogged up. any one have any ideas to fix the problem or have ran across this before?

[duwem]

Fuel may be getting hot and vaporlocking. Check to see that lines aren't routed near the muffler. Also wouldn't hurt to Change the fuel filter.

[goat124]

no I have put the fuel lines in a heat shield to take care of that .. I have all so gutted the muffler and found the problem in it and got all the brick like packing out of it. now I think I'm having a fire issue but can't find the omm specs or the specs for the voltage output on the coil to find out how much it needs .