Re: need the pros on this one!
The washboard road thing and the not idling are probably 2 different things. You are shaking the gas up so bad on washboard that there is not enough plain liquid at the proper level in the float bowl, you are most likely starving the engine. As far as the idle goes, the Carter bbd is notorious for its idle circuit clogging, the solution to that is a simple rebuild. Somehow this even happens with a good fresh filter, I've seen it happen enough to know its not a fluke. The washboard just stirred up sediment in the bottom of the float bowl, got sucked into your idle circuit.
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