FarmallH

Al in Mn · Oct 4, 2012

I have an H that when it has not run for a week or so runs on 3 cylinders for about 10 minutes and the runs on all 4. There is no water in the
crankcase. Could it be a sticky valve?

Wayne in MN · Oct 4, 2012

Bad spark plug? Which cylinder is affected? Is it a different cylinder or always the same one?
Where are you located? I am in Fergus Falls,MN.

Al in Mn · Oct 4, 2012

I did not think about checking if it was the same cylinder every time. Thanks I am at Mt. Lake

David G · Oct 5, 2012

You should be able to hear a sticky valve as an uneven speed when you crank it. It will speed up when the weak cylinder comes up.

I would expect a spark plug is fouled, does it smoke at startup?

gene bender · Oct 5, 2012

Pull all plugs lay them in order and compare maybe just need a new set.

merlynr · Oct 5, 2012

pull one wire at a time with it running and listen for no change in rpm. I had a plug that would fire if I held the wire slightly away from plug and not when connected.

wisbaker · Oct 5, 2012

My mother-in-law was raised in Mountain Lake, her dad was the John Deere Dealer and former Mayor.

FarmallH

Al in Mn

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Wayne in MN

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Al in Mn

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David G

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gene bender

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merlynr

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wisbaker

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