CY, what kinda milage are you getting? We got the same setup. My 170 I/O has been bored .040 oversized, and I can see it could take a little more fuel. Maybe Ill rejet the carb with a couple size smaller jets and give it a try.
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77 V20 cuddy with 170 I/O Mercruiser
72 16ft. Carolina w/a 25hp Evinrude
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