Take a look at this picture of a 1952 Rochester B Carburetor. Has anyone ever seen one like this with a small hole at the top right beside the top of the pump shaft? What is this for? Looks like it was done for a reason. Should a screw be put in it or sealed up with something more permanent? Would it work like this without sealing it up?

This isn’t the one I am running on the truck right now but it was an extra one (maybe original one) my grandfather had in his building.
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Last edited by PastorMatt; 05/19/2024 2:00 AM.
52 Chevy 3100

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