The Autolite 3095 and Champion F11 plugs are 1/2" pipe thread spark plugs made to service a lot of older applications that use such a spark plug. They are much colder heat range than Champion X or other period spark plugs. So they foul much more easily in a Model T. A better approach is to clean and re - use original spark plugs from the era. They will last a long time between cleanings. In my experience they tend to never foul so long as there is nothing major wrong with the engine.
I find that chemicals designed for cleaning guns work very well on spark plugs for removing carbon and soot / fuel deposits. Here is a little write up:
https://modeltfordfix.com/cleaning-t...rk-plug-t1386/
Quote:
Originally Posted by Speedster Jeff
After a log of digging it appears that Autolite 3095 & Motorcraft F11 are possibly direct replacements. Can anyone please confirm?
Thank you,
Jeff
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