Yeah, I'm with Dayclona on this one....might just have a spark plug wire fall off. And I hate to say it, but just about every tine I've rebuilt/installed a motor, there was "something" I missed...often 2 or 3 things....forget to tighten a hose clamp completely, not hook up the field wires on the alternator..."something"....you will get there brother, don't worry. Try the easy stuff first.