Oil Fouling plugs question-Super A-1

Farmall Super A, AV, 100, 130, & 140 1939 - 1973

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Super A
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Oil Fouling plugs question-Super A-1

Postby Super A » Sun Aug 15, 2010 5:36 pm

On my Super A-1, when we checked compression on it, every cylinder was 90-110 pounds, IIRC one was close to 125. However the plugs were oily and it was missing badly. I got a chance to visit the new Tractor Supply Store in my area today and while there I picked up a new set of plugs for it, and just put them in. The miss is gone now. I am confused about what would be causing so much oil fouling, with compression that good? Only thing that sticks out in my mind is valve guides. What else should I look for?

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Al
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Re: Oil Fouling plugs question-Super A-1

Postby John *.?-!.* cub owner » Sun Aug 15, 2010 8:44 pm

As you mentioned, valve guides can cause oil burning, but badly worn or broken rings will oil seal giving good compression tests, but not hold the pressure when the cylinders fire. Had that on a 6 cylinder pickup several years ago. It was getting about 80 miles to a quart of oil, but compression checked good.
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Re: Oil Fouling plugs question-Super A-1

Postby Eugene » Mon Aug 16, 2010 8:01 am

Try Seafoam in the fuel and engine oil. May help free up stuck piston rings. May not help. Might make the problem worse. Probably time for an engine overhaul.

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Super A
10+ Years
10+ Years
501 Club
501 Club
Posts: 4104
Joined: Mon Jan 26, 2004 10:53 am
Zip Code: 28521
Tractors Owned: 1949 Cub "The Paperweight"
Cub powered IH 52R combine
Grandfather's 1948 Super A
White demo Super A-"Ol Whitey"
1950 Super A "Old Ugly"
1954 Super A-1
856
Buncha other junk
Circle of Safety: Y
Location: NC, Jacksonville area

Re: Oil Fouling plugs question-Super A-1

Postby Super A » Mon Aug 16, 2010 10:06 pm

Eugene wrote:Try Seafoam in the fuel and engine oil. May help free up stuck piston rings. May not help. Might make the problem worse. Probably time for an engine overhaul.



Yeah, the need of an overhaul is a given. It has low oil pressure, and a light knock when warmed up. The high compression readings threw me. I wasn't expecting that given the other symptoms already present.

Al
White Demo Super A Restoration Updates

Let us pray for farmers and all who prepare the soil for planting, that the seeds they sow may lead to a bountiful harvest.


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