Originally Posted by
Geezatec
If it takes awhile for idle speed to drop, it running too lean. What you lookin for, idle speed drops half a second to 1 second and go from there. Run a few laps and adjust as needed(LSN).
Sorry to disagree, but when it takes a long time to drop the idle speed, then it's usually to eich on the bottom.
If it's too rich on the bottom, you need to turn in the idle screw to keep it running and then, when you clear it out, the idle is too high and it takes a bit to load up again and drop the idle speed.