I like that you can choose you’re own plug with NGK, using their plug code table/legend. Had an old engine that was down on power, hard to start, but showing overfueling. Being able to choose a hotter plug with improved ignitability helped improve the situation. Starts first crank now. Has a better burn therefore allowing a leaner mixture. Reduced hesitation. Will be interesting to check plugs after a few weeks to see what they say. Don’t forget to test your leads too. They made the most improvement in this case. Opted for a set of good MSD’s, as you can make the exact length for best fit and lowest resistance.
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