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Farmall & IHC Tractors Discussion Forum
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antonholstrom@msn.com

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Anton C Holstro

11-16-2005 05:43:45




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We have a 1950 Farmall H. It was running good until a problem with the float. We replaced the float and the tractor would not run except fo full choke. We felt the carb needed rebuilding so we had rebuilt a a local tractor company. The problem still exists, it want almost full choke to run.
Is it a problem in the carb or somewhere else?
Thank you
anton




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El Toro

11-17-2005 05:16:50




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 Re: antonholstrom@msn.com in reply to Anton C Holstrom, 11-16-2005 05:43:45  
Open the main jet adjusting screw near the bottom of the carburetor. Turn the screw CCW one full turn & see if that helps. This allows more fuel to the engine. Hal



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Dave Grindle

11-16-2005 09:05:53




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 Re: antonholstrom@msn.com in reply to Anton C Holstrom, 11-16-2005 05:43:45  
Anton -- all good advice so far.....one other thing to check , IF the fuel starvation problem started AFTER you put the new float in - then it's most likely the float (adjustment) itself....bend the float up just a tad so it will drop enough to let the needle valve open up - if you bend it up too much your carb will leak ....i've also had the problem of the float getting bent a little side to side so that it rubs on the carb & won't go either up or down

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William Hatcher

11-16-2005 07:23:35




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 Re: antonholstrom@msn.com in reply to Anton C Holstrom, 11-16-2005 05:43:45  
Could be an internal crack in manifold between intake and exhaust. I had one. It sucks in exhaust with air and fuel on intake. Found it by taking manifold off and pouring water into intake port...some ran out exhaust.



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captaink

11-16-2005 06:33:26




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 Re: antonholstrom@msn.com in reply to Anton C Holstrom, 11-16-2005 05:43:45  
You definitely have a fuel starvation problem. Others have given you good places to look for the cause. It could be a restriction in the tank, fuel line, sediment bowl under the tank, or a fuel filter if there is one. Could be manifold gasket leak, you can check by spraying carb cleaner around the manifold. If the engine picks up rpm you found a leak. Basically, think it through and keep checking until you find the cause.

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Allan in NE

11-16-2005 05:58:15




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 Re: antonholstrom@msn.com in reply to Anton C Holstrom, 11-16-2005 05:43:45  
Anton,

Check your intake manifold gaskets. Sounds like she is suckin' air. Also, do you have that high speed needle turned out far enough?

Allan



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Janicholson

11-16-2005 06:22:04




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 Re: antonholstrom@msn.com in reply to Allan in NE, 11-16-2005 05:58:15  
In addition to what Allen stated, check your fuel delivery to the carb there could be restriction.
it should flow a stream of fuel = to a coffee stir straw. (into a pan held by the carb)
JimN



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