My newly built China Girl (66cc 2-stroke motor) was cutting out after 5 to 10 minutes of running. Loosening the gas cap solved the problem. So that meant there was a vapor lock/vacuum caused by a very good seal on the gas cap. That's bad and good.
Rather than drill a hole in the center of the cap, I used this method (photo found on the net). After two days of hard mountain climbing, no more vapor lock and there is no gas leakage.
Yay!
Rather than drill a hole in the center of the cap, I used this method (photo found on the net). After two days of hard mountain climbing, no more vapor lock and there is no gas leakage.
Yay!
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