I seem to remember that someone has something like this last week, and I can't find it anymore. Here is what happened to me yesterday. I tried the cooling fix, and then took the sled out on the lake and put on 15 miles. But, the last two times I started it the CHECK ENGINE light flashed but when I turned it off and tried to tip it , it never burped anymore. So, I wondering if there just wasn't enough snow hitting the heat exchanger? Help!