Last week I bought an '82 Honda Nighthawk 650 from a guy and started it up and it ran fine. I let it sit for one week and this weekend I started it up and rode for a bit. When I stopped it and tried starting it again, the engine would turn over but wouldn't start. I rolled it back to my place and then went out to try to start it 20 minutes later and it started up again only it would not idle in neutral, it just stalled out and wouldn't start again. It has gas in it, and the headlight and other lights turn on and everything, so I know the battery is working. Has this ever happend to anyone else?