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Anonymous
Guest
I am rebuilding a Holley 1904 Glass bowl carburetor and have some great info off of tocmp.com My problem is that there is a threaded hole on the outside of the carb at the same level as the choke plate, 1/2" in diameter, that has nothing in it. The hole is on the same side as the fuel inlet only smaller. The diagrams on the tocmp web site also have the hole empty. What goes here? I thought maybe a spark control valve as these were popular on late 50's and early 60's carbs. Would like to get this carb to work for me. Thanks Bob
