hi, i just got my 80cc bike kit and i finished putting it on my bike 2 days ago. yesterday i rode it and it ran fine and i had tons of fun. but towards the end of the day it just lost power. this morning i tried to start it but it did the same thing. it will start and run a right for a few seconds then it will lose power and completely stop. i think this may be a problem with the carburetor, but i'm new to these engines and i was wondering if anyone could help?