Fuel dripping from accelerator pump jet- IDF Options

[tornik550]

On my dual weber 44 idf's, I am having fuel dripping out of one of the accelerator pump jets when the car is off. I assume, it is also when the car is running. There is a fairly large amount. It is pretty obvious that it is from the pump jet. I really dont think it is a float height issue cause it is only one jet that is doing this.

The car has been sitting for two weeks due to some electrical issues. The engine was running fine prior to this. Now it is running ok however I am now having a popping noise when I decelerate. It may be present at other times however the car is so loud that I cannot hear it.

Ideas?

[toolguy]

the check balls keep fuel from the accelerator pump from going back into the fuel float bowl. . the top ball valve keeps air or dirt from getting into the nozzle passage. . But if the fuel is peculating from heat in the bowl, then pressure can push gas past the lower check ball and up through the accelerator body and out the nozzle. .

Start the engine cold. . run 30 secs - 1 minute.. shut it off. . look and see if its overflowing. . the engine wont be hot enough to cause percolation. .

If it's overflowing, you got something else going on, hi fuel level or accelerator adjusted wrong. . this is sort of a wild ass guess

There is a fix for percolation by drilling pressure relief holes in the top carb plate. . I'm familiar with weber triples but imagine these are similar. .Also, if it is percolation, do you have heat insulator plates under the carbs