[AT] Super A Carb Leak

[Bill Brueck]

I'm not familiar with the McCormick A carb, but if the seat is a removable
one the problem can be that the seat itself isn't sealing to the carb body.
I fought a seeping carb for a long time a while back and finally discovered
that there was a nick in the carb body so that the seat gasket wasn't
sealing.  

Bill Brueck
   Pine Island, MN USA

-----Original Message-----
From: at-bounces at lists.antique-tractor.com
[mailto:at-bounces at lists.antique-tractor.com] On Behalf Of charlie hill
Sent: Wednesday, July 07, 2010 3:26 PM
To: Antique tractor email discussion group
Subject: Re: [AT] Super A Carb Leak

Ben, how can you tell the float isn't sticking with the carburetor put 
together and mounted on the tractor?  Unless there is some sort of crack in 
the carb housing or the gasket is leaking there are only two possibilities, 
float is not floating up properly or needle valve and seat are not properly 
mating.   That's it, got to be one of the two.

Charlie

--------------------------------------------------
From: "Ben Wagner" <supera1948 at gmail.com>
Sent: Wednesday, July 07, 2010 3:18 PM
To: "Antique tractor email discussion group" <at at lists.antique-tractor.com>
Cc: "Farmall/IHC mailing list" <farmall at lists.antique-tractor.com>
Subject: Re: [AT] Super A Carb Leak

> On 7/7/2010 11:21 AM, Will Powell wrote:
>> You say once it is running it leaks? Does it leak while its running, or 
>> after?
>>
>> How is the float level, perhaps it's too high and you need to lower the 
>> level.
>>
>> Or, the float is getting hung up in the chamber, I've had floats that 
>> were bent out or in that got caught while moving... I always shake my 
>> carbs before I mount them to be sure I can hear the float moving around, 
>> If I can't hear it clanking around its usually stuck on something.
>>
>> Regards,
>>
>> Will
>>
>> ----- Original Message -----
>> From: "Mark Greer"<markagreer at embarqmail.com>
>> To: "Antique tractor email discussion 
>> group"<at at lists.antique-tractor.com>
>> Sent: Wednesday, July 7, 2010 10:56:25 AM
>> Subject: Re: [AT] Super A Carb Leak
>>
>> Sounds like the float is sticking open.
>> Mark
>>
>> ----- Original Message -----
>> 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: Wednesday, July 07, 2010 10:16 AM
>> 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
>>>
>> _______________________________________________
>> AT mailing list
>> http://www.antique-tractor.com/mailman/listinfo/at
>> _______________________________________________
>> AT mailing list
>> http://www.antique-tractor.com/mailman/listinfo/at
>>
> It leaks after it is running.  During, and before, it is fine.
>
> As for the float/ bowl level... I lowered it some, but the leak
> persists.  I have checked, and the float isn't sticking.
>
> Thanks,
> Ben Wagner
> _______________________________________________
> AT mailing list
> http://www.antique-tractor.com/mailman/listinfo/at
> 
_______________________________________________
AT mailing list
http://www.antique-tractor.com/mailman/listinfo/at