rg97 Posted July 21, 2013 Report Share Posted July 21, 2013 Hi all Just put a 15 tooth sprocket on the front, running a 39 rear. It ran fine before on a stock sprocket, and now whenever im in my yard (wet grass, 75 degrees, 1200 ft, 80% humidity) it will stumble anytime i have the throttle from 2/3 to wide open in any gear other than 1st. We think it may be running lean, and its not getting enough fuel to run properly. Can you help me? Quote Link to comment Share on other sites More sharing options...
fastbanshee8 Posted July 21, 2013 Report Share Posted July 21, 2013 What do the plugs look like? Current jetting? Quote Link to comment Share on other sites More sharing options...
rg97 Posted July 21, 2013 Author Report Share Posted July 21, 2013 running 155 mains on pwk28's on a 392 stroker. plugs are chocolate brown all the way around Quote Link to comment Share on other sites More sharing options...
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