The question is: I think I have finally got the timing down pretty good. The right side is not quite as hot as the left. But---when I goose the throttle it takes a long time (10 seconds) to come back down to idle. Is this normal. Air screws are about 1.5 turns out which makes it idle well.
Thanks,
Jim
CB77-E 1053411 throttle return to idle
Jim, not normal. Are the slides returning to stops right away? You can remove air cleaner tubes, and visually watch them. if not, you'll need to lube cables, and throttle tube, als remove slides and make sure they move freely in carbs. If they do return, you probably have an intake leak, or tight intake valves, both of which are not good for you engine. Spry carb cleaner around mounting areas and see if engine revs up, and check and adjust valves.
davomoto I had major, major trouble fixing a similar problem on mine. As davomoto says, not normal. (For a while I was able to compensate with an idle air screw adjustment, but eventually the problem got too bad and even closing the idle air screws fully wouldn't compensate enough). I checked all possible culprits thoroughly, including air leaks, valve adjustment, timing advance, etc, etc. Eventually the only possible culprit I couldn't rule out was an internal air leak around the slides. I even tried new slides, with no improvement. I figured maybe the carb bodies were warped/worn too far. Eventually I had to swap out both carbs after checking EVERY other possibility. Finally, on my THIRD set of carbs, the problem went away. I hope you don't have to go that far. If you're lucky you have a "simple" air leak around a carb mounting flange or phenolic spacer.
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