Scorpion Snowmobiles

1972 440 Super Stinger Snowmobile

if the two cylinder went bad, then they probably never had a mixture of oil right. I had newer sleds do with oil pumps out and that is why I used all premix all my sleds. Perhaps the mistake that premix or just something Fluke, separate them and see what he has done, you can tell if it was the wrong amount of oil there will be no difficulty on any cylinders. Bearing out, break the seal, and thus all cycles can lead to blow.