[AT] [Farmall] Super A Carb Leak

[Rupert]

Hello Ben,
	I think that is what he is saying. I've chased that problem myself. A 
thin fiber or hair on the valve seat is enough to make the valve leak. I 
suggest to blow out the valve again plus blow out the fuel line so they 
should be clean again. I would install an inline filter between the 
sediment bowl and the carb to help eliminate anything getting past the 
sediment filter. Blow out the line between the filter and the carb 
before you install it. These kind of problems can be very frustrating.

Rupert

On 7/7/2010 1:26 PM, Ben Wagner wrote:
> On 7/7/2010 12:29 PM, Barney Van De Weert wrote:
>> The needle and seat control the level of gas in the carb bowl. If it over flows
>> the gas drains out of the hole by the choke. The float, needle and seat are
>> probably still suspect, the fact it leaks after you run it indicates the needle
>> is not seating correctly or the float is sticking and not pushing the needle
>> into the seat.
>>
>>
>> Also if there is any dirt at all coming from the tank, it can cause them to leak
>> as well. Make sure the fuel bowl is clean and has a screen installed
>> correctly in it.
>>
>> I have had brand new needles and seats that still leaked.
>>    Barney Van De Weert
>> 3828 Heartwood St
>> Uniontown OH 44685
>>
>>
>> bbvande at yahoo.com
>> Cell# 330-760-5988
>>
>>
>>
>>
>> ________________________________
>> From: Ben Wagner<supera1948 at gmail.com>
>> To: At<at at lists.antique-tractor.com>; Farmall/IHC mailing list
>> <farmall at lists.antique-tractor.com>
>> Sent: Wed, July 7, 2010 9:16:06 AM
>> Subject: [Farmall] 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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>>
>>
>>
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>>
> You said that you had a brand new needle/seat leak.  What did you do to
> fix the leak?
>
> I performed a test where the upper halve of the carb (with float,
> needle, seat, etc) is suspended over a clear bowl.  I turned the fuel on
> to see if the float shuts off when the level in the bowl gets high
> enough.  The float seems to shut the fuel off, though I can't tell
> whether or not there is a small leak.
>
> So what you are saying is that I start the engine, it sucks gunk from
> the sediment bowl that sticks to the seat, not allowing the needle to
> stick.  Wouldn't I be able to see the gunk when I disassemble the carb?
> I have had paint in the seat before, but not the last couple of times it
> has leaked.
>
> Thanks for your help.
> Ben Wagner
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-- 

yvt

Rupert Wenig
Camrose, Alberta, Canada.	

email: rwenig2 at xplornet.com
	
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