Great question. I wish I had a good answer. 1980 Mercury 200HP. Runs great, idles good, but rarely starts without starter fluid. I squeeze the bulb until hard. I can see the fuel in the line with a new inline clear Moeller gas filter. New Moeller fuel/water separator, new Attwood bulb. Not sure if I am not providing enough fuel to the engine or flooding it. After I run it and let it sit for a couple of hours (while trolling), it starts (usually).
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