Ardie Dedrickson - your seal questions...

Posted by Steven@AZ on October 18, 2006 at 15:53:48 from (216.67.213.217):

You had asked about installing umbrella seals to cure a plug fouling condition on your Farmall H. You gave extra info about compression, etc. that helped me to understand the situation, here is my response:

Thanks for giving the extra information - some of us need to see the "whole picture" in order to make a suggestion...

Do you run the tractor only for short periods of time?

Do you have a working thermostat (at least 180 degrees F) installed so the engine comes up to temperature in a short period of time?

What do the fouled plugs look like? If they are black, you have a fuel/air problem - running rich or just not run long enough to warm up.

Have you tried hotter plugs? I believe Champion D19 are the standard, D21 will be hotter and less prone to foul. Our 544 fouls the D19 in a day (fresh overhaul) but the D21's never a problem - we only run for short periods of time... Some say the champion plugs are the problem and go to Autolite 3116 (I think that's the right number).

I hope this helps you out!

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