What is the difference between cold and hot spark plugs?

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asked Sep 23, 2018 in Other-Cars/Transportation by Archtopki (190 points)
What is the difference between cold and hot spark plugs?

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answered Sep 23, 2018 by Larry S (42,350 points)
Spark Plugs that are known as "Cold Spark Plugs" are spark plugs that transfers the heat rapidly from the firing tip of the spark plug into the engine head, which keeps the firing tip of the spark plug cooler.

But "Hot Spark Plugs" are spark plugs that have a much slower rate of heat transfer, which keeps the firing tip of the spark plug hotter.

Either type of spark plug will work fine in your vehicle so you can choose the ones you want.

But colder spark plugs are more preferred for engine performance on hot days or in hot regions but during cold weather hot spark plugs are much better.

I would personally stick with the Hot Spark plugs.

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