Hi! I'm tryna fix up my old Honda atv. It's been sitting around for a long time and I've decided to use some of my summer to fixing it, as it would be a good learning experience. When I try to kick-start it, you can hear it crank but it won't start. The light flashes when I kick but that's all. We've had the carburetor cleaned and a different coil installed but no luck. What could be wrong?