OK here goes. In my personal opinion the model "B" is one of the best carburetors ever built as long as it is applied to what it was made for. Your fuel pump pressure should be between 3.4-4.5 psi. As for the leakage I would not open it up again, sometimes the problem is the miss match of throttle body. Two vs one vent hole. As far as the bubbling of fuel try putting two or three spring type clothes pins on your copper fuel line, they act as heat sinks. If this old time fix works then make a sink that looks more aesthetic. Many times someone in the past puts too much rubber tubing for line, the more copper the better. Metering jets can also be a problem but that means going back into the carb. .058 is the best all around unless you are at higher elevation. I don't know which rocket scientist decided a plastic accelerator pump is best, I throw away the ones in kits and only install leather. Tupperware and gas does not mix. I'll be here if you need me. Doc "don't know much but I live and breath model "B"
Last edited by Doc.Hall; 05/22/2020 2:02 PM. Reason: grammer
