Reply To: Carb issues Evinrude 15 HP

[Don]

OK, so the white plastic fuel pick up was “cracked”…Did you replace it? I’m thinking there was not much of an issue if the engine ran OK at high speeds. How about the little hose that runs from the white pick up to the tube on the carb body? These were notoriously flimsy, today’s gas usually caused them to disintegrate. The later, improved hoses were brown in color, what color is your hose? Not only did the original hoses disintegrate, but the debris left behind oftentimes plugged up the tube and idle passages.
Does the engine respond appropriately when you mess with the idle fuel needle? Can you make it too lean or too rich? If so, it would seem as though the carb is performing adequately. Are you sure the carb butterfly is synced properly? It should be completely closed at dead idle. Not likely this adjustment would have changed unless you messed with the little allen head screw on the carb roller linkage.
Are you sure you don’t have a spark issue, have you replaced the plugs? Is the engine coming up to temperature at idle? It won’t idle well if running cold.
Just want to be sure I have it right, the engine has never run right since you commissioned it this time after sitting for a few years, correct?