More carb tuning problems.

[Humbucker]

Originally Posted by Tongue Pirate

If you can run up to 2000 rpm & maintain it smoothly yet when you goose it it goes flat for a moment then it's likely in your acc pump system. If you just have a stumble in that area that doesn't go away even when maintaining that rpm you likely have a lean condition & it may be that you need a lower powervalve to fill in in your low vacuum condition. Or it could be something else completely like clogged passages or failing gaskets. I helped a friend rebuild a carburetor yesterday that had holes in the acc pump diaphram. It had a huge flat spot on acceleration, can't imagine why...

I'll look into this as well. Funny enough, no problems seem to occur when sitting still and adjusting the throttle by hand. It seems to be present only under load.