[AT] Super A Carb Leak

charlie hill charliehill at embarqmail.com
Wed Jul 7 09:06:59 PDT 2010


Ben, most of us have run into that problem more than once.  Either you have 
a bit of trash in the carb that gets up in the needle valve after you run 
the tractor or the float is hanging up and not closing the valve.  You'll 
just have to keep looking until you figure it out.  It's not rocket science. 
The gas gravity feeds to the carb bowl, the float rises and shuts off the 
flow from the tank.  If it does not close or does not close properly the 
carb bowl overflows into the throat of the carb and out any hole it can get 
to.  Could be the sintered  bronze plug, the choke shaft or around the 
intake hose.  There is basically nothing else that could cause the problem.

--------------------------------------------------
From: "Ben Wagner" <supera1948 at gmail.com>
Sent: Wednesday, July 07, 2010 10:16 AM
To: "At" <at at lists.antique-tractor.com>; "Farmall/IHC mailing list" 
<farmall at lists.antique-tractor.com>
Subject: [AT] Super A Carb Leak

> Hello,
>
> Thank you for all the imput.  The carb leaks from the drain in the choke
> housing.  First off, if you have had the same problem and figured a  way
> to fix it, I really would like to know how you did it!
>
> Here's a clue that maybe someone more experienced than me could
> decipher.  The carb, once I rebuild it, doesn't leak.  In fact, I left
> the gas on just to check, and two hours later it still didn't leak.  But
> once I run the engine, it leaks.  What would cause this?  The float,
> though it is brand new, I tested yesterday, and it is sound.  The
> needle/ seat I tested, and replaced.
>
> Would this fact of when the carb leaks make a difference in what the
> problem is?
>
> Thanks,
> Ben Wagner
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