Quote:
Originally Posted by PaulProe
enjoying the tuning process  of my webers. I am finding my idle mix screws have little to no effect on the idle speed or smoothness"....... |
Your throttle plates are not open equally. You will have to twist the shaft slightly until the non responding hole opens up some more. Even if they all show equal with a balance tool, they are obviously not getting enough air to combust the fuel you are metering in with the idle mixture screws.
To back up a minute, you have to be certain that there are no clogs in the idle mixture passageways and that fuel can flow thru the metering hole at the base of the carb, and that you don't have any issues with ignition, etc.
If you are getting no response on all of the cylinders then you need to adjust the linkage until they are open more.
Why are you talking about going to a smaller idle jet when you are too lean on the transition ? Forget about the A/F numbers at idle. Idle A/f ratio is the least important consideration for you.
I had similar transition symptoms and ditching the 60 idle jet Improved things dramatically. A 65/100 combo would be the first thing I'd try in your situation. A 70/120 or a 70/110 (a drilled out 100) would be next up.
Z