Carb dripping gas onto floor
 

Will the carb leak fuel if the gav is not set correctly?
or is it a float issue.fuel leaked out onto the gound just before start up.thanks in advance .

Re: Carb dripping gas onto floor
 

The GAV adjustment will not cause a leak. Either you're float level is set too high, or the needle valve is leaking, or the drain plug at the bottom of the lower body is leaking or you have a crack in the casting somewhere.

Re: Carb dripping gas onto floor
 

Or you are over chocking at start up. Release the choke after one revolution or don't use the choke to start and see if the dripping has disappeared.

Re: Carb dripping gas onto floor
 

Adjusting the gav. will not help, I close the shut off valve and run the carb. dry if I'm going to be setting for more then 20-30 min's, and esp. over night in the garage, to many reasons not to. these are 80-83 year old cars, I don't expect any recalls from ford any time soon ;).

Re: Carb dripping gas onto floor
 

These things can leak just the fellas mentioned. Trying to stop some of these critters from leaking can make you pull your hair out. Apparently from looking in the mirror, I've had a lot of these leak over the years !

Re: Carb dripping gas onto floor
 

Is it an original carb or a Tillotson? If it's a Tillotson, Sometimes the carb body itself can warp over time because of the aluminum casting and cause it to leak through the gasket.
I agree with the guy above who said it's probably the float adjustment and/or bad needle valve.
I just had to do the same thing to mine!!!!
Good luck!

Re: Carb dripping gas onto floor
 

I've tried everything but my carbs still drip a few drops in a day or so. My solution is a plastic paint bucket hung beneath the carb with a wire or zip tie

Re: Carb dripping gas onto floor
 

just make sure the plastic bucket wont get eaten by gas... had that goopy mess on the garage floor before...

Re: Carb dripping gas onto floor
 

Glenn:

Order a modern (Viton tip) float valve from Bratton's. Take it apart before you install it and clean out any brass machine particles residing inside. The valves work very good, but Bratton's is at the mercy of his supplier and they sometimes leave brass particles inside from the machining process. You may also want to replace the tank valve as well as it apparently is not shutting off 100%.

Tom Endy

Re: Carb dripping gas onto floor
 

I agree with Timothy Kelly, check the gaskets under the jets. Not only do those gaskets get old, but they are tough to get properly tightened without the proper tool.

http://www.brattons.com/product.asp?...Keywords=14080

Re: Carb dripping gas onto floor
 

Possible causes of carb leaking: some of which have been already stated ..
1) float set level too high
2) needle valve leaking or its gasket leaking
3) leaking drain plug/gasket
4) cracked casting
5) leaking gasket at main jet or cap jet
6) hole in float
(7 also sometimes a leak at the inlet union is mistaken for a genuine leak elsewhere)

Re: Carb dripping gas onto floor
 

Doesn't this create a dangerous fire risk?

Re: Carb dripping gas onto floor
 

A new tank shutoff valve with a stand up filter should solve the problem. The new valves are ball type and they never leaked for me.

Re: Carb dripping gas onto floor
 

hey BARRY where do you get the ball type shut off thanks ORA

Re: Carb dripping gas onto floor
 

I think mine came from Snyders but that was 8 or 10 yers ago. I believe all the suppliers (Macs, Snyders, Tams and Brattons) all carry the new style.

Re: Carb dripping gas onto floor
 

If you are running a Zenith carb and the float is set too high, it will stall when you put on the brakes. A couple of things that hasn't been mentioned as a possible cause is main and cap jets that are too short. I always try to use old original numberd jets because some repro jets are way off, especially old repro jets. If there happens to be too many gaskets under the main jet or stuck up in the lower housing, this will lower the main jet below the level of the fuel in the float chamber and cause a drip. I have found that the original type needle valves can work good. I give the needle a tap with a small hammer before installing the float, this seats the needle . I then blow air through the fuel inlet and check that the needle functions properly.

Re: Carb dripping gas onto floor
 

Dang me, well remembered Purdy! I always measure the jets for length- (not yet come across a short one, though plenty of time yet )

Re: Carb dripping gas onto floor
 

I put a small shutoff valve right near the carb and I shut it off and let it run out of gas when I'm parking it for a while or putting it in my attached garage. Works good for me. I don't use the one inside the car.

Re: Carb dripping gas onto floor
 

Fix the carb, it should NOT be leaking. Get an electric fuel shut off switch, so much easier than the original.
Paul in CT

Re: Carb dripping gas onto floor
 

After many attempts with various solutions I finally fixed the leak with an electric shut off as mentioned above.