Fuel leaking out around primary shaft

[phk1967]

When I turn off the car  a good amount of gas starts leaking out by the primary shaft area on the passenger side only. I lowered the float level slightly and put in a new needle but problem is still there any suggestions on what it could be?
Thanks

[phk1967]

When I turn off the car  a good amount of gas starts leaking out by the primary shaft area on the passenger side only. I lowered the float level slightly and put in a new needle but problem is still there any suggestions on what it could be?
Thanks
I just want to add it's a 7028268 carb, mechanical fuel pump, and was totally rebuilt recently and other than running a little rich{still being dialed in} it was fine. Must be flooding somewhere but can't seem to pin point it.

[Mr.Pontiac]

Is the base plate bushed??? Can you fisically  move the primary shaft at all??? May iask did you reseat the check ball on the body of carb.??

[Cliff Ruggles]

Leaking at the needle or at the gasket under the seat....Cliff

[phk1967]

Yes, I can physically move the primary shafts. A new seat was made when it was rebuilt a few years ago and until recently the carb was fine. It was just sent Cliff's to get the fuel well plugs resealed as the primaries were leaking and I suspected that was the cause and I also put on a new seat gasket. Well I put it together, started it up and it's still leaks on both sides of the primary shafts when shut off. About the only thing I didn't do was reseat the checkball again, which I'm about to do next. Thanks for the help.

[phk1967]

I finally had time to look at it again and the Fuel bowl was just about empty when I removed the top. I removed the seat and replaced it with a solid window, old one was sealing by the way and took the clip off the needle and just dropped it in, now I'm just getting a few small drips after shutoff so it's getting better but still not fixed. Any other suggestions?   

[Cliff Ruggles]

Did you hit the checkball hard enough to crack the casting under it?....Cliff

[phk1967]

No, I just gave it a few taps using a small hammer. How can I check my casting to see if it has any cracks at home?, I should of had you do that when you replaced the fuel plugs in it last month.

[Cliff Ruggles]

Fill the bowl with fuel and see if it leaks out.  Leave the fuel inlet seat and needle in place.  If it's leaking bad enough to come out the primary shaft, it will show a leak on a bench test.....Cliff

[phk1967]

I put a sheet of paper under the carb and filled it with fuel. It sat for 3 days and it isn't leaking, any other suggestions on what may be causing my problem?

[Cliff Ruggles]

Since the fuel bowl has no places to leak below the fuel level, fuel can't run out around the primary shaft after shut down unless it's flooding over, dripping from the boosters, etc.

It has to have a leak at one of the bottom plugs, crack in the bowl, or the fuel level is getting high after shut-down (flooding)......Cliff

[phk1967]

Only other thing I can think of is I did replace the paper filter with a stone one, could this be causing the fuel level to get that high after shutdown? I'm going to put in a paper filter with a check valve if I can find one and see if that solves the problem. If not, then I give up and I'll just send you a different one to recolor and replace idle jets in and then I'll set that one up.
Thanks for your help so far.

[Cliff Ruggles]

The check valve filters are there to prevent drain back, and will not effect carburetor filling....Cliff