Re: Fouled plugs on '39 H

Posted by P Browning on October 08, 2005 at 14:20:07 from (67.11.210.220):

In Reply to: Fouled plugs on '39 H posted by '52 Farmall H on October 06, 2005 at 14:58:26:

Hi '52 --

On those sparkplugs for your JD "H" Tractor, delete the Autolite 388 from the list of suitable plugs. It IS a resistor type plug -- and resistor plugs are potentially harmful to the coil in your magneto. 'Sorry about that reference being in the paragraph I sent -- it IS coming out!

If you like Autolite, go for the 3116. Personally, I prefer Champion plugs for JD applications. There are some others out there but I have not needed to go there. You mentioned intermittent use of your tractor -- I would take issue with this as a reason for plugs to foul. Fuel mix too rich & worn out rings combined with lots of engine idling will do it most every time. I also have found a radiator shutter quite helpful in keeping engine temp up during periods of "light load" applications. And if by "intermittent operation," you mean parade type duty, you may have to bite the bullet and clean plugs now and then.

In summary, keeping engine temp up, leaning up some on the fuel mix, and good rings have been the main ways to keep plugs from fouling on my JD "H" tractor.

Follow Ups:

• Re: Fouled plugs on '39 H '52 Farmall H 18:55:15 10/08/05 (0)

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