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M38A1 24-volt spark color at plug gap?

Posted: Mon Feb 08, 2021 2:11 pm
by JeepdaddyRC
What color is a strong 24-volt spark at the spark plug electrode when the spark plug is grounded against the block?
I have a yellow spark.
Always thought a strong spark was bright blue.
Does this indicate a weak spark?

Posted: Mon Feb 08, 2021 10:55 pm
by wesk
Here is an excellent read for you: http://www.ankn.uaf.edu/publications/vs/magneto.html