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Farmall & IHC Tractors Discussion Forum
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Nebraska Cowman---F-20 Wizard

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Thomas Donahy

03-17-2006 06:10:42




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Dear Mr. Cowman,

How smoothly should an F-20 idle? I have a friend who has two beautifully restored tractors. They have new pistons, valve jobs, and rebuilt carburetors and magnetos. They pull great but idle rough. He was convinced this was normal until we met an old man with a rusty old 20 that idled as smoothly as a bathtub. Should they idle as smoothly as an H? If your answer is yes what has been overlooked? Thanks, Thomas Donahy

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Nebraska Cowman

03-17-2006 14:07:05




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 Re: Nebraska Cowman---F-20 Wizard in reply to Thomas Donahy, 03-17-2006 06:10:42  
rough idling is typical of F20s. I blame it on spark jumping around on the rotor disk. Others have different opinions. Try what you want. Mine pulls great but skips unloaded. I retard the timing to smooth it out.



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Janicholson

03-17-2006 11:41:16




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 Re: Nebraska Cowman---F-20 Wizard in reply to Thomas Donahy, 03-17-2006 06:10:42  
Idle fuel mixture
Valve settings (hot)
timing (may involve advance control, and dwell stability)
If these are good then they should be very smooth.
JimN



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