Very slow to return to idle

[Fred Camper]

Thanks, I copied both images since they may be handy someday soon.

[rufuss]

what is the coating over the button ruffuss

[Sidecar Bob]

Coating?

[rufuss]

The buttons on a few of the carb racks I have, have a coating of something over the buttons to protect them,did not know if this was factory on later carbs 78-79

[Sidecar Bob]

I don't think they came like that.

[Whiskerfish]

Some here: viewtopic.php?f=52&t=43640#p453030

I think the unaltered versions are in the gallery somewhere just takes some digging to find them.

SNIP

Bob,
I gather that you may have added the impressive details within this particular illustration. Where did you locate this illustration please?

I wish to locate a similar illustration of the carburetor's theory of operation when the engine is idling; Throttle valve closed. When the Idle Discharge Port Jet Pilot is discharging fuel, only. Bypass holes are not contributing.
Thank you

[Sidecar Bob]

I wonder where they came from originally?