Quote:
Originally Posted by jkv45
Have you shimmed the needles?
The carbs are usually lean in the mid-range, and shimming the needles richens it up and smooths-out that area. The Main Jet is typically plenty rich.
As ducatiman noted, take some time and get your idle mixture screw adjusted precisely. Make sure the engine is fully warm and the gas is fresh. That adjustment will change with weather, so know that you may need to make additional adjustments if the temp changes significantly.
Make sure your air filter is clean - and not over-oiled. Carbs synced and valves adjusted as well.
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Carbs were just cleaned via ducatiman, no shimming, everything's stock except newly drilled idle mixture screws. I'll be doing more testing today to see if my idle mixture screws feel good - I'm at Left 3 and R 3.5 as of today. Swapping out my petcock for a spare I just cleaned helped everything, see above post. Old one would work initially under vacuum application but wouldn't continue to pour fuel with continuous vacuum application.