Help with carburetor

Posted by moodydavid16 On 2023/11/27 0:08:35

I’m having a couple problems with my carburetor on my 1948 Packard Super Eight it has a Carter WD-0 model 643S.

The first issue is it won’t stay idling. I can start the car pretty easily, but then it idles for about five seconds, and then shuts off.
Timing is currently set to 6 degrees before TDC

The second issue that I have is gasoline leaking from the float bowl. I have tried turning the fuel pressure down to below three psi. I have also tried putting the float level way lower than where it should be.
Whenever I turn the fuel pump on, it will build pressure up to just below three psi (or wherever I have it set) then it will slowly leak past the needle and seat, causing the floatbowl level to rise until it spills out the top, where the accelerator pump is.
I have just had this rebuilt so it has all new gaskets, needle&seat, completely cleaned, etc.
Could someone with more experience help me out here?