Leaking Holley Carb

Hello,

I have a single barrel Holley carb that is leaking where the throttle valve is. The hole is where the shaft goes through and turns the throttle valve itself. Its not bad (very small gap), but it is enough where gas leaks out. Enough to make worry about a car fire. The shaft or rod is br***. I took it a part and took it to some machine shops to sleeve the hole. They did not want to do it. Any recommendations on how to fix it by myself? I need to get back on the road! I also think if gas is coming out, air is getting in and causing it "sputter". I have no other air or gas leaks. It runs great when I get on the open road.
The engine is a four banger model A. I put a lake style header (home made) and added this larger single barrel Holley carb (it came off a ford flat six ). I completely rebuilt the carb. I installed a electric gas pump (3-4 psi).
Another problem is when I am at a stop sign and I hit the gas, it tends to stall unless I "really hit the gas". Once I am is second or third gear its operates fine. Smooth as silk. Any recommendations on how to make it run smoother. Other than that leak I mentioned earlier. Is my carb too big for that engine?

I can post some photos.


Thanks for your time.

Marty

 

The throttle shaft is usually not sealed, and only gets gas leaking out of it if there's a lot of gas spilling onto the throttle plate. Is there black smoke coming out the tailpipe when it's running poorly?

 

Hello,

No. It is clean. I have noticed one thing. Gas tends to get wet around the gaskets on the carb. I know the screws are all tight. I rebuilt the carb with a new rebuild kit and gaskets.
I was wondering if the pump was too much for the engine? More gas is going in then what the engine can burn? Is that possible? I thought if it was getting too much gas that would cause to to flood. Might be a stupid idea. It leaks the worst when I am starting it. Maybe my float needs adjustment?

Marty

 

Here are some pictures. This is my first time "hopping up" a motor. I thought I would start small. I didnt want to get too deep over my head. I dont have many friends that know anything about cars or engines. I do most of the work.

 

It sounds like the float level might be a bit too high...if you didn't adjust it yet, that's the first place to start.

 

Marty- You just answered your question. Lower the float level. Test drive it before doing anything else. After every change you make - test drive it before making the next tweek. One thing at a time and you will be able work out the hesitation. It could be caused by a lot lot of different conditions. -Mike

 

What squirrel said, along with verifying that the needle valve is seating good. Fuel at that area isn't due to air leak around throttle shaft.