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Farmall H carb leaks gas, won't start. Please hel

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haroldeck

10-27-2003 10:22:24




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I have a 1949 gasoline farmall H. The carb leaks gas. I believe the gas is flowing into the carb whenever the fuelcock is open, even after there is enough gas in the carb to operate the motor. Now it won't start. I'm a novice. Shouldn't the gas fill up the bowl of the carb and then stop flowing in? I disconnected the air hose and cranked the starter. The gas splashed out. How do I fix it? Thanks for yoyr help.

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J in Pa

10-27-2003 16:29:08




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 Re: Farmall H carb leaks gas, won't start. Please in reply to haroldeck, 10-27-2003 10:22:24  
heroldeck, also the gasket between the two halves of the carb might be bad. i had one go bad over night and lost about a half tank of gasoline. put a new one in and everything was fine again.
good luck.

J in Pa



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Dave

10-27-2003 14:27:58




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 Re: Farmall H carb leaks gas, won't start. Please in reply to haroldeck, 10-27-2003 10:22:24  
These carbs can be tricky..my A has a Zenith carb with the same problem. I tried my best to fix it by tightening the needle vale seat as tight as I could: there is a gasket between it and the upper half of the carb. Depending upon how the tractor is sitting on the level, it could also be gas weeping past the gasket that holds the bowl onto the carb...if you look in the air intake you may be able to see the gas weeping past the gasket. Normally it shouldn't be that full of gas, but on a hill it might.

I say 'tried to fix' it because I was never able to get it any better than a slow drip. What I did helped (I think). Good luck,
Dave

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rustyfarmall

10-27-2003 10:32:09




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 Re: Farmall H carb leaks gas, won't start. Please in reply to haroldeck, 10-27-2003 10:22:24  
Either the float has failed, or the needle valve and seat is bad. Might be as simple as a speck of dirt keeping the needle valve from closing completely. In any case, the carb will have to be taken apart. You might want to go ahead and do a total rebuild of the carb at this point, the overhaul kit you buy will have very detailed instructions included. These carbs are pretty simple, take your time and you won't get in trouble.

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earlschieb

10-27-2003 10:31:16




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 Re: Farmall H carb leaks gas, won't start. Please in reply to haroldeck, 10-27-2003 10:22:24  
Sounds like the float is stuck, try taking a small hammer and gently tap on the carb bowl, but the best way to fix it is take the carb apart and see if the float is good, and not full of gas, if the float is good, replace the needle and seat assembly with a new one, reset the float and put it back together afyer a good cleaning and inspection of the interior componets of the carb.



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