Home › Forum › Ask A Member › 1946 evinrude zephyr › Reply To: 1946 evinrude zephyr
February 24, 2019 at 9:48 am
#169568
Spark plugs — mumbles post “sparked” a thought about NGK plugs. Whereas Champion plugs rate heat range HOTTER with increasing numbers the NGK system is opposite… higher numbers indicate COLDER heat range.
Joe B