Spark plugs

Farmall B & BN Tractors, 1939-1947
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Tractor Rod
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Spark plugs

Postby Tractor Rod » Sun Mar 13, 2022 2:30 pm

I have a Farmall B with three spark plugs that are champion D15Y and the other is D18Y. Can someone please tell me the difference and which ones should be in my Tractor?

Thanks

indy61
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Re: Spark plugs

Postby indy61 » Sun Mar 13, 2022 2:55 pm

For Champion brand plugs, the higher the number the hotter the plug. I doubt you will notice a difference but it's been said you want a hotter plug for a tractor that does not work hard.

Tractor Rod
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Re: Spark plugs

Postby Tractor Rod » Sun Mar 13, 2022 3:07 pm

Thanks so much!

Jim Becker
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Re: Spark plugs

Postby Jim Becker » Sun Mar 13, 2022 6:09 pm

For light use, you probably would do better with the equivalent of a D-21.


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