I'm tempted to start throwing ideas out there, but need do more info from you. Did it hesitate as soon as you went full throttle?
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So I left college today and decided to race a 125cc moped. believe it or not it wasn't a problem but this is where the problem happened. I arrived home and decided to brainstorm ideas. have compression, good spark, cleaned the carb but as soon as I cleaned it I slapped it back on n began to ride wasn't even able to leave my drive way the bike miss fired n cut out. then rebuilt the carb tried it again same problem. I currently put a polini 21mm carb on there now but having a problem tuning it the bike would just cut idle for 5 second then cut out. please help
in the polini carb there is a 100 main jet 32 pilot and idle pin is second the top idk what to do I hate leaving my bike at home and being forced to catch the bus any suggestions???