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Rich - The group may be able to help, but may need more detailed info. When you say that you are running high idle, does that mean no load? If so, how high is high idle? It sounds as though you may have two separate problems: 1. Backing the load screw out on the dyno, with no gain in power suggests either you have enough fuel (and you have reached a saturation level of fuel, which would be evident by lots of smoke) OR you are still not getting enough fuel (hence no change in the dyno reading AND no smoke). 2. The other problem of fouling plugs would be traced back to (assuming that your ignition is strong) either an overly rich idle (visible smoke at idle) or the air bleeds in your carb which provide the transition from idle circuit to main circuit are plugged with dirt, causing excessive vacuum on the idle circuit during part throttle operation. If the idle mixture does not appear to be too rich, than you will probable need to soak the carb in the proper cleaning solution to loosen the dirt, or send it to someone to have it professionally cleaned and rebuilt... Regards, Goldsburg
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