Originally Posted by 50GMC253
I mentioned I could see some dribbling into the secondary venturi

How can a 1-barrel carburetor have a secondary venturi? If fuel is dribbling out of the venturi, either the idle speed is too high or the float level needs to be lowered a little. I make an L-shaped float level gauge out of thin cardboard like the backing board of a note pad, or maybe a piece of index card with the height of the float on the long leg of the "L". That's how it's been done for the 60-something years I've been rebuilding carburetors if there's not one included in the repair kit.
Jerry

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