So I've got a 4 year old snowblower. Today is very cold, zero degrees. I keep the snowblower putside and covered. I have used it three tines this year and used around two tanks of fresh fuel in it.I went to pull start it this afternoon and I couldn't budge the pull starter. It has an electric start so I used that. After a few seconds it turned over and started. It ran for a minute or so then began running rough and stalled. I couldn't get it to run for more than ten seconds after that. I checked the air filter and its clean. Oil level looks perfect. Tank is full of gas. I am thinking I've got ice somewhere in the carb or fuel line from condensation since its been outside and we had a week where it went from 50 down to 10. Anyone with small engine knowledge know what I should do? I don't really have a place to bring it in amd warm it up.