Today i was ready to go rip my new sks 146 850 with only 4 hours and 60km on it. I started my sled up and was warming it up for about 5 minutes but i gave it some gas while warming it up, which im guessing could be the problem. Well to the point, after i warmed it up i drove it to the garage to fill it with some gas and then suddenly it sounded very weird, much darker than before so i gave it some gas and it had 0 power and sounds like a 4 stroke. If i buy new spark plugs will the cylinder start up and start working again or what do i do?