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ok it will start up an run but quits a lot till it gets warm, but has a bad miss an wont idle, I have a brand new Honda carb on it, good gas flow, new plug, but when I let the throttle go below a quarter, it backfires through carb an tail pipe:confused: so it has never had any electrical work or mechanical work done...it just started all the sudden, I'm think it may have ignition coil breaking down, or cdi box going bad...anyone had this trouble before? let me know what you did to fix it. thanks:skeptic:

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