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?
TIA
Al
This site uses cookies to maintain login information on FarmallCub.Com. Click the X in the banner upper right corner to close this notice. For more information on our privacy policy, visit this link: Privacy Policy
NEW REGISTERED MEMBERS: Be sure to check your SPAM/JUNK folders for the activation email.
Oil Fouling plugs question-Super A-1
Forum rules
Notice: For sale and wanted posts are not allowed in this forum. Please use our free classifieds or one of our site sponsors for your tractor and parts needs.
Notice: For sale and wanted posts are not allowed in this forum. Please use our free classifieds or one of our site sponsors for your tractor and parts needs.
- Super A
- 10+ Years
- Posts: 5229
- Joined: Mon Jan 26, 2004 10:53 am
- Zip Code: 28521
- Tractors Owned: Collector of Super As, Corn Pickers, and a buncha other junk. Even a Cub now and then...
- Circle of Safety: Y
- Location: NC, Jacksonville area
Oil Fouling plugs question-Super A-1
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.
Celebrating 75 years of the Super A: 1947-2022
Let us pray for farmers and all who prepare the soil for planting, that the seeds they sow may lead to a bountiful harvest.
Celebrating 75 years of the Super A: 1947-2022
- John *.?-!.* cub owner
- Cub Pro
- Posts: 23701
- Joined: Sun Feb 02, 2003 2:09 pm
- Zip Code: 63664
- Tractors Owned: 47, 48, 49 cub plus Wagner loader & other attachments. 41 Farmall H.
- Location: Mo, Potosi
Re: Oil Fouling plugs question-Super A-1
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.
If you are not part of the solution,
you are part of the problem!!!
you are part of the problem!!!
-
- Team Cub Mentor
- Posts: 20344
- Joined: Fri Jul 02, 2004 9:52 pm
- Zip Code: 65051
- Circle of Safety: Y
- Location: Mo. Linn
Re: Oil Fouling plugs question-Super A-1
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.
- Super A
- 10+ Years
- Posts: 5229
- Joined: Mon Jan 26, 2004 10:53 am
- Zip Code: 28521
- Tractors Owned: Collector of Super As, Corn Pickers, and a buncha other junk. Even a Cub now and then...
- Circle of Safety: Y
- Location: NC, Jacksonville area
Re: Oil Fouling plugs question-Super A-1
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.
Celebrating 75 years of the Super A: 1947-2022
Let us pray for farmers and all who prepare the soil for planting, that the seeds they sow may lead to a bountiful harvest.
Celebrating 75 years of the Super A: 1947-2022
Return to “Farmall A, Super A, AV, 100, 130 & 140”
Who is online
Users browsing this forum: Bob McCarty and 5 guests