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Farmall & IHC Tractors Discussion Forum
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H running again. this time better,,,, yet

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Andrew Z

12-12-2005 15:30:56




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I got my H running pretty good now.I put some fresh fuel in and put some gas treatment in the tank. It starts and runs good yet it is having some issues with ideling. I have to turn the idel needle all the way in for it idel somewhat right. It runs good above that. What could cause this?
Thanks for the help Andrew




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riverbend

12-12-2005 19:20:11




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 Re: H running again. this time better,,,, yet in reply to Andrew Z, 12-12-2005 15:30:56  
The idle screw controls the amount of air bleeding into the pilot circuit from behind the venturi. Turning it out lets more air in. The air flowing through the idle circuit sucks fuel out of the idle jet and it comes out of the slot above the throttle plate.

If you have the idle air screw turned all the way in, you are not using the idle circuit much if at all. That would explain why it idles poorly. You might have an internal fuel leak.

The IH service manual gives a good discription of how the various circuits in the carb work. The IT manual only gives a drawing and some ballpark settings. It is good enough to see where the circuits go. You should be able to squirt carb cleaner through all of them.

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old

12-12-2005 17:00:56




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 Re: H running again. this time better,,,, yet in reply to Andrew Z, 12-12-2005 15:30:56  
Your carb probably need some cleaner or more cleaning out.



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