Poor hot idle caused by ethanol gas? Whaddya think?

RustyRatRod said

[hot-idle compensators] are built into some Carter AFB carburetors. Right between the secondary venturi all the way in the rear.

Click to expand...

True. '70-'71 Carter BBSs and '70-'72 Holley 1920s, too, and a big variety of other carbs. But they were also one of the first items on the chopping block when Chrysler went on their penny-pinching rounds.