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  1. #1

    Gooey Stuff In Fuel Tank

    I just got this fuel tank for a 95 750SLT. It looks like the gas that used to be in it turned to molasses. It's very hard and sticky. I left the tank in the sun and it slowly ran down the inside. Any ideas on how to dissolve and remove this stuff without damaging the tank?


    Attachment 306671Attachment 306672


  2. #2
    bowsniper's Avatar
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    Kerosene.

  3. #3
    Click avatar for tech links/info, donation request K447's Avatar
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    Pull out a few gooey samples and see what dissolves it best in a glass jar.

    Then make sure the selected solvent does not dissolve the fuel tank material. Fuel tank is made from polyethylene?

  4. #4
    I tried the kerosene. That didn't work. It just made it softer. But did not dissolve it at all. K447's idea is a good one. I will try that. Since it seems like a sugar based substance. I was thinking of trying to freeze it with dry ice or something then try to break it up and dump it out. Access is limited so i can't put any scraper or similar tool to scrape it out. Keep the ideas coming please.

  5. #5
    BlueFishCrisis's Avatar
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    Where are you located - Maybe someone has a spare tank they could hook you up with....?

  6. #6
    I'm in southern California. If someone near me has one. Please let me know.

  7. #7
    Usually like substance dissolve each other. I would try gas 1st.

  8. #8
    bowsniper's Avatar
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    Interesting that kerosene didn't work all that well. I'm surprised . Try some dawn soap and a toliet type long brush. Maybe add a lil kerosene too. Together they make a great dissolving team . I like using kersone because its the universal solvent.

    I'm assuming the tank is out!

  9. #9
    Per K447's suggestion. I took a sample and put in a small container. Tried carb cleaner but that didn't work. It's currently in gas but it doesn't look like it's doing much. I'll let it sit a while and see what happens.

  10. #10
    Quote Originally Posted by bowsniper View Post
    Interesting that kerosene didn't work all that well. I'm surprised . Try some dawn soap and a toliet type long brush. Maybe add a lil kerosene too. Together they make a great dissolving team . I like using kersone because its the universal solvent.

    I'm assuming the tank is out!
    Yes the tank is out. And, me too. I thought the kerosene would do the trick. Just an FYI. I just got this ski recently as a project because it came with all the parts already removed and it was only $125. It had been sitting since 1999 when it broke a rod. Everything looks brand new since it was only in use 3-4 years. I'm guessing that the PO just left the gas in the tank and it evaporated leaving behind the gooey stuff. Possibly from the Ethanol??? And I'll get some Dawn and try that too. Thanks.

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