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Message: [QUOTE="JAJ, post: 161902, member: 17650"] My son and I are desperate to go riding on Sunday but we have a slight problem. My sons PW-80 isn't running right. The bike will start, but if you hold the throttle steady at say 1/4 throttle, the bike will rev on it's own. If you let the bike run like this for a few moments the bike will just die. Even if the throttle is open... I cleaned the air filter, same problem. I put a new spark plug in, same problem. I field cleaned the carb. Problem gone. Bike ran great...for about 15 minutes...problem came back. Any suggestions? I was thinking, possible air leak? Much thanks! Mr T [/QUOTE]