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Farmall & IHC Tractors Discussion Forum
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fuel problem/IH404

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alex g

05-19-2008 06:35:29




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HELP!!! OK, I cleaned my carb on my IH404 and made sure the float wasn"t stuck. I still have gas pouring out the bottom of the carb after I shut the engine down. There are 2 bolts on the bottom of the carb, and the gas is coming out the one in the center(the bolt is snug in it"s hole. Also, it runs for a minute or two then dies on it"s own...could it be bad fuel that"s making it die, or perhaps timing?

I"d love to talk to someone...here"s my cell# (918)346-0108

Alex

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alex g

05-19-2008 07:19:53




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 Re: fuel problem/IH404 in reply to alex g, 05-19-2008 06:35:29  
I did some more research and the carb manufacturer for my tractor is "Marvel-Schebler" if that helps anyone. there are 2 bolts on the underside of the carb... one that points straight down and the other sets at about a 60 deg. angle.

Is there a good "process" for going through a fuel system to find problems? I've gone through the ignition system and replaced plugs, wires, cap/rotor, points and condenser. I've also changed oil, oil and fuel filters, and also cleaned/refilled the air cleaner. The settling bowl gets "crud" in it (looks like rust) and I've emptied/cleaned it. I'm fresh out of ideas and really need my tractor! Thanks for helping!

Alex

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Janicholson

05-19-2008 07:48:16




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 Re: fuel problem/IH404 in reply to alex g, 05-19-2008 07:19:53  
From the parts diagram, it apperars that the two bolts are a plug, and a filter drain. The filter like plug keeps fuel from building up in the air intake. The other allows draining the carb.
Go to caseih.com, then choose your country, then search for parts, then begin your search here, then type in 404 in the model box. then choose fuel system, then carb, then Marvel.
The needle and seat (controlled by the float are leaking fuel even though the float is working. The needle and seat are either worn out, or there is a piece of rust, or flake of foreign material in the hole where the needle seats. If the needle is smooth on its tapered part, and has no wear groove, it is pronably crud in the hole where it seats. A new needle and seat may be needed. Always shut off the fuel at the tank when the tractor is shut off. Gravity fuel systems are like having a fuel pump run all the time. These things can flood and leak out all your gasoline. It also can fill your engine with fuel (not a good thing). JimN

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