Water In Fuel Tanks
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Water In Fuel Tanks

  1. #1
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    Default Water In Fuel Tanks

    My 19' CP has water in both fuel tanks what is the best way to drain them without taking them out?

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  3. #2
    LIQUID QUARTER MILE Pro Mod's Avatar
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    jack the tongue up and put an evacutor on the fuel line and that should get it done plus pore some seafom in each tank and that will evaporate the moisture as well
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    Before I bought a water/fuel separating fuel filter. I would add 1 gallon of De-natured alcohol to each tank, then top off with gas, and run it. The alcohol will absorb the water and burn with the fuel.
    If you have algae or crap growing in the water, it will give you problems if you run smaller fuel filters, or have a screen at the end of the pick-up tube's in the tank. The screen is very fine, and will be got plugged by this stuff.
    Half the people in the world are below average.

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    Senior Member jetboatperformance's Avatar
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    Quote Originally Posted by BACK2BIGRIVER View Post
    My 19' CP has water in both fuel tanks what is the best way to drain them without taking them out?
    Given this situation we drain/evacuate all fuel and Caca (siphon) vs bring it up the stand pipe (some have tiny screens that can clog ) , when only a small amount of moisture remains in the bottom of the tank we drop the bow down and lower an super absorbant Square (pepboys oriellys) attached to a welding rod into the front or center of the tank thru the filler to mop up any remaining drops , never had any real luck with chemicals and don't like running emulsified fuel /contaminated fuel thru the fuel system Tom

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    Fought this on my day cruiser years ago, bought gas on the water the one and only time, and got bit. I wound up with about 1 1/2 gallons of water in a 24 gallon tank. Tried isopropl alk, sea foam, you name it. I siphoned out about 10 gallons, with minimal evidence of water, burned this off in the mower. I was able to lower the nose of the boat, to let the front of the tank, below the filler to be the lot spot. I let it sit like this for a few days, to let the water settle out. With a flash light I could see the water under the fuel, lying in the bottom of the tank. I rigged up a piece of metal tubing long enough to reach the bottom of the tanks,yet be able to position it to where the water was. Next I attached a setion of clear tubing, to the metal tube to drain to my 5 gallon fuel jug. Starting the siphon process, I was able to direct the pick up, to snatch every last bit of water in the tank. Once the water was gone, I switched to another gas container and finish off the draining process. I burnt off the rest of the gas in my truck, and disposed of the bad gas. Up untill I did this I could not run off of the one tanks in my boat, and fought this for a few weeks.
    Upper Midwest Power Boat Association
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