We finally got some snow back in northern NY... about 2-3 feet of fresh powder to be exact. A few buddies and i took a ride on the hill. I was driving along and the engine just started to bog down then just shut off. I pulled over and changed the plugs and it started right back up (plugs had a little black on them but not too bad). About 3 miles later the same thing happened it bogged down and shut off. This time the plugs looked to be somewhat dry and did have small signs of oil on them. I am very much concerned now that we have alot of snow again. What could this possibly be? FYI(had a complete top end rebuild about 400 miles ago with cudney pistons and rings, also i have not ran a compression test as of yet).