Serowbot
YaBB Moderator ModSquad
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OK.... so what's the speed of dark?
Posts: 28668
Tucson Az
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Just jetting to match... Proper jetting depends very much on weather, elevation, and temperature.... but I would think the main jet is O.K. Try adjusting the needle clip,... drill out the idle mix plug and adjust that,.. if you need more than three turns out from fully seated, go one step up on your pilot jet.
Here's some general tips on tuning your carb.... In general... hotter air = go leaner more humidity = go leaner higher altidude = go leaner cooler air = go richer less humid = go richer lower altitude = go richer Barometric pressure effects jetting in a big way, humidity, air temp, and elevation. Some places have extreme variations in barometric pressures and if you live there, your pipe will blue. I live in the high desert and temps can change 40 degrees f in a couple hours, humidity can vary wildly too. No way to jet for that. A good indicator of overall jetting is the weather...if popping/backfiring increases on humid days, or at higher elevation, that indicates rich....less popping on those days indicates lean.
To test the main, accelerate from 30 or 40 mph, in 4th or 5th gear at full throttle for several seconds, then reduce throttle by about 1/8,...if power increases for a second, you are lean on the main jet. Go up one jet size and test again. Do testing on an average day,... not too hot, wet or weird...
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