In Reply to: 20 hp old evinrude...help posted by Niander on June 05, 2003 at 13:14:35:
Problem is probably: A gummed up main jet. Or dirty spark plugs. or weak spark. I would vote for the dirty main jet. This is the most common cause of the lean condition you described. To be sure change the plugs. Run good mid grade gas mixed 50 to1 fuel to oil. and try running a bottle of marine gas treatment through the motor. Spraying some sea foam or fogging oil through the carb with the engine running won't hurt either. Let us know what happens., Tailgunner
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