Evinrude 140 v4 (1987)
Help I need to know the correct plug to use on this engine, Is a Champion QL78YC gap at .30 OR QL77JC4 GAP AT .40 ?
I am currently running QL77JC4 @ 40 and its oiling up really bad.
I also have NGK's BPZ8HS-10 I can use please let me know the correct option or what works best. Thanks
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