I have my father's 1960 3 hp Evinrude outboard motor that I have had for over 30 years sitting in my basement. It was in good running order when my father died. A few weeks ago I decided to get it running. When I took off the gas cap, I found out the aluminum inside of the cap had iodized leaving the gass tank full of aluminum sand. My question is what is the best way to clean this mess out? My thought is to wash it out with gasoline until the sand is out. But if there is any left, is there a way to prevent it from getting into the carb? Any thoughts would be appreciated. By the way, if any of you guys have an old motor, loosen the cap so this doesn't occur. I remember one of my Orvis fly rods came in an aluminum case, and I left it sealed for over a year and the same thing happen to it.
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