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#1
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Dam you're lucky bro! I'll bet a nickel you've got a rotted out tank. Mine had the same symptoms you described, minus the explosion and I had holes the size of your fist in my tank when I finally got it pulled out. Foam holds moisture and rots out aluminum tanks.
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1985 Wellcraft V-20, Evinrude ETEC 150: SOLD 1979 Marine Trader 44, twin Ford Lehman 120s 2006 Panga 14, Tohatsu 20 
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#2
08-18-2011, 02:26 PM
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Alright, this is kind of a scary thread for us novice rebuilders. Mine is an '88 Fisherman that has been sitting for awhile; is there an easy way to check the tank for leaks, other than filling it? I'm pretty sure it's the original and I've already decided to replace the hoses. And my "tank compartment" does drain into the bilge, right under the live well.
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#3
08-18-2011, 02:30 PM
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Normally, they are pressure tested to 3 psi...somehow, all openings must be completely plugged and the tank pressurized....then the pressure must hold for "x" amount of hours to pass the test...not sure how long "x" is......maybe a local tank builder can do that for you?
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87 Fisherman 20
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#4
08-19-2011, 06:32 AM
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OK, how 'bout this: a piece of, say latex glove, clamped on hose fittings. Put air in tank & latex should expand slightly. If it doesn't hold, I've got a leak. (I don't have a pressure gauge that will measure 3PSI)
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#5
08-19-2011, 08:25 AM
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I don't think latex will hold up to the fumes if there are any....I bet if you can find a ball pressure gauge with low psi increments that you can somehow mount or screw into a fitting, it will work...especially if its digital.
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87 Fisherman 20
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