Good afternoon everyone. New to the forum, but old to the Yamaha grizzly. I’ve owned 6 bikes all Yamaha’s and this is my second grizzly. I got this one from a friend about 2 years ago after doing some welding and work on his house we built. It’s a 2006 grizzly 660. It’s all stock other than the rims and tires, light kit and the oversized back rack i built for it. I’m having some issues with this bike as I was getting ready to give it to my son. Last Halloween my wife used the bike to pull a trailer with the kids and friends but apparently the adults decided to ride and she over heated it burning up the rings. Same friend that gave me the bike also has a shop and they rebuilt the top end and replaced the rings on it. The problem now is that it would still cover the spark plug with carbon afternot ran for a short time and would die. Just yesterday I had it running while working in the yard and the bike made a popping noise and died. I went to start it back up and it just turns over real fast but won’t start. Has compression, and a new plug. I put a cap full of fuel in the head and put the spark plug back in and noticed fuel coming from somewhere under the bike. Not sure if it’s the overflow from the carb or if the bike blew a gasket or cracked the block. The carb has never had any work done to it and I was planning to take it off to clean but then found this. Amy ideas where to start would be very helpful. Sorry this post is so long, just have an 11 year old that really wants to ride.