I've got a metric mechanics rebuilt 2.2 liter engine with new Weber Carb. Couldn't get her started on this cold morning. Turned over okay but wouldn't catch. Got a little sputter though. I decided to have my buddy give me a jump for a little extra juice, and it started right up. I have a new battery, so it should have enough power to start the engine on its own. What gives? What is the solution. Is there too much draw off the battery from other components?