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106 Posts
It just started acting up at 1/4 throttle going through water and backing up ramps, I got a 170 jet, 2 inch snorkle, has run good for a while, took plug out it os black except for a 3 brown spots on plug, the a/f is 2 1/2 turns out did plug check on idle and it is good, just all of a sudden started acting up.