Sooooo.... I'm trying to understand this, now, too. My '49 3804 with a Rochester B has the same issue (maybe not as bad)
Having just gone through JonG's (not to be confused with JonH or even JohnM ...
) *excellent* new tech tip on Rochester B-Series carburetors (which none of you have seen yet because it's still in the final editing phase ...) ... I now consider myself to be a newly self-ordained minor authority in training on the Rochester B series carburetors
Are all these one-lunger (single barrel) carbs similar to the B in that running too rich is a sign that there might be a vacuum leak somewhere/multiple places, or a stuck open power valve?
Are the Carters as susceptible as the Rottenchesters apparently are to bad joints in the idle circuit and the Air Horn to Fuel Bowl seam?
Or could it be as simple as a float adjustment, or stuck power piston/power valve? (Does the Carter even have issues with these things?)
Not trying to be the teacher, just a student trying to wrap my head around carburetors ....
But it seems to me that to get to the bottom of this for a "good" fix, the OP needs to pull the carb and do some forensics.... Ja?
