Carburetor - Huffing above 45MPH

[Rdinatal]

Ok, ok, so it's not really doing drugs... Neither am I!!

On the 2nd drive I was able to confirm what I 'thought' I was hearing. With my right ear deaf, sometimes I think things are different than they really are. The best I can describe it is when accelerating at 45mph I hear multiple "HUFF" (not a backfire). The engine lightly skips a beat but continues to develop RPMs.
Under 45mph, smooth...

Is that the Governor I keep reading about?
Any high speed (yea, right) jet adjustment on the carb I should look at??

[ez8]

How far out do you have your choke pulled when all this is happening?

On mine I have to pull the choke out about 1/4" to get it to run smooth. Air is getting in somewhere, but I can't detect from where yet.

[Rdinatal]

How far out do you have your choke pulled when all this is happening?

Choke isn't out, this happens at temp.

[ashyers]

Rdinatal,
It's possible it's the governor. You can test it in lower gears and see if the behavior is reproducible. A search will kick up a bunch of posts on how to adjust the governor if that proves to be the case.

I've also seen a low float setting cause issues that were similar to a poorly adjusted governor. Again a search will help you out there. I'd suggesting setting the fuel level "wet" if possible as opposed to just measuring the float height with the needle closed.

Andy

[Rdinatal]

It was the governor. Adjusted and no more huffing.

While troubleshooting it was revealed that two cylinders have really low compression. Not something that one wants to find...