Bad gas
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Bad gas

  1. #1
    Senior Member alkyexpress's Avatar
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    Default Bad gas

    IN a fuel tank ( not ME ) , Gas was about 17 yrs old,,,, I want to hear some suggestion's on how to clean out a aluminum boat fuel tank,, I got 98% of the gas out ,, when you look inside ( took the sending unit out ) It has a heavy layer of CRAP on all the wall's and the bottom,,, If it was dry I would use the 2 handfull's of pee-gravel and shake like HELL method,, ,, SO WHAT DO YOU GUY'S DO ?????? ........ Thank's in advance ..............Eric

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  3. #2
    Senior Member GT Jets's Avatar
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    A couple gallons of denatured alcohol would be a good start...

    Maybe follow up with some toluene?

    Sounds nasty (not to mention smelly)
    GT


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    Put a 300 on the back of it, Flywheel it and a nosecone. $15,000 later you'll have a 65 mph pile of shit......

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    Senior Member jetboatperformance's Avatar
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    Quote Originally Posted by alkyexpress View Post
    IN a fuel tank ( not ME ) , Gas was about 17 yrs old,,,, I want to hear some suggestion's on how to clean out a aluminum boat fuel tank,, I got 98% of the gas out ,, when you look inside ( took the sending unit out ) It has a heavy layer of CRAP on all the wall's and the bottom,,, If it was dry I would use the 2 handfull's of pee-gravel and shake like HELL method,, ,, SO WHAT DO YOU GUY'S DO ?????? ........ Thank's in advance ..............Eric
    Alky whatever it takes to disolve the varnish, I use laquer thinner (let it soak) , not sure I'm crazy about the Pea gravel due to the grit (done that with coolant tanks) also alot of radiator shops will boil those tanks for a few bucks, That varnish could be hell on valve guides if it comes thru with fuel. Several year ago I lit a motor just to see if it would run in an old resto (bad fuel) and stuck almost every intake valve Tom

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  6. #4
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    Default segestion

    Put a hand full of 1/2" nuts in the tank and drive around for a week or so with it in the bed of your Pick-up. Roll the tank over to a differant side once and a while. Then rinse the crap out. One gallon of de-natured alcohol from Home Depot after the wash out is where I would start. (Same as the pea gravel deal)
    Good luck, be safe. schick
    Half the people in the world are below average.

  7. #5
    Senior Member sturat's Avatar
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    I have had good luck with sea foam and nuts.
    Legalize the Constitution!

  8. #6
    Boat Nut sleekcrafter's Avatar
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    A few gallons of E85 should eat that stuff up in short order.
    Upper Midwest Power Boat Association
    DRAG BOAT RACING UMPBA #926


  9. #7
    Senior Member 500BBC's Avatar
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    Parts dip works GREAT.
    "Pot had helped, and booze; maybe a little blow when you could afford it. Not smack, though" President Barack Obama.

    Liberals just chose to ignore relevant information about the world they live in, and then call themselves sophisticated for having chosen to be more stupid than God made them.

  10. #8
    Senior Member Hass828's Avatar
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    put some seafoam & a log chain in it & shake the crap out it, then like said leave it in the bed of your truck 7 drive around a week or so. then dump & repeat till clean.
    Log chain works better than gravel or nuts cause you can get it all outa there.
    "if we keep doing it the same way we always do..we will always get the same results"
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  11. #9
    Cantard 71hallett's Avatar
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    Diesel
    Quote Originally Posted by gn7 View Post
    It would be a balmy 85* in Steel's shop if he would move a little faster

  12. #10
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    Quote Originally Posted by 71hallett View Post
    Diesel


    +1. It works great to clean old varnish and such.





    Darrell.
    San Diego.

    28ft Sportcat
    With Twins

  13. #11
    small block jet 2sangers's Avatar
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    I have used a bag of ice before. Nice sharp edges, shake it back and forth, pour out the water and sludge, repeat if needed. No gravel left for the filter.

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