OK.....I have a MT2 that up to this point was running great. Now it will not start. Nitro was left in the tank/line over the Holidays (unknowing to me) and when I try to start it w/ the pull start it does not want to "catch" to turn the motor. It is like a yo-yo. When I put it on the starter box, it won't start, and a thick greasy substance comes out of the muffler...

I have tried new glow plugs, heater is charged, batteries work.........

SO.............Am I screwed or what? Any suggestions? This has me stumped. [][]

Thanks ion advance