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Old 10-25-2013
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Re: Honda 9.9hp Outboard Won't Start

Holla,

Sorry for your issues.

I have a Honda 9.9 with both electric and pull start. Frankly the pull start puts more energy into starting the engine than the electric does so as long as you don't have arthritis or bursitis or other physical issues the pull start is fine.

The Honda carbs are *extremely* sensitive to ethanol. There are several issues. First there is phase separation in older gas - that means the ethanol separates from the gas; the ethanol is corrosive and erodes the inside of the fuel line and leads to tiny particles clogging up the carb jets. Ethanol is also hydrophylic and sucks water right out of the air, leading to additional corrosion in the fuel system and the accumulation of water in the fuel tank.

Given you description I would haul your fuel tank ashore and dump it in a hazmat tank. Get new fuel. Drain your fuel line and carb bowl. Rebuild (sorry) the carb. Start over with clean fuel and the engine should start.

Moving forward, when you are done with the engine, every single time, remove the fuel line from the engine and let the engine run out of gas. Make sure you close the vent on the tank.
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