Home Forum Ask A Member Best Way To Clean Years Of Sludge From Fuel Tank?

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  • #282592
    aquasonic
    Participant

      US Member

      Glad to see that you were able to get your tank clean. Be careful using acid on aluminum as it’s very corrosive. I do use it in a controlled manner for cleaning out the oxidation in cylinder head water jackets, and a few other applications.

      The Por-15 is usually used on steel tanks with holes in them. Your two-piece cast aluminum tank might be the most rugged outboard tank ever made. If it develops a leak, the leak would likely be at the seam. The fix for a leaky seam is to disassemble the tank halves and reseal it.

      Save the Por for a steel tank. Just an opinion. Good luck with the TD-20!

       

      1 user thanked author for this post.
      #282609
      John Gragg
      Participant

        US Member

        Glad to see that you were able to get your tank clean. Be careful using acid on aluminum as it’s very corrosive. I do use it in a controlled manner for cleaning out the oxidation in cylinder head water jackets, and a few other applications.

        The Por-15 is usually used on steel tanks with holes in them. Your two-piece cast aluminum tank might be the most rugged outboard tank ever made. If it develops a leak, the leak would likely be at the seam. The fix for a leaky seam is to disassemble the tank halves and reseal it.

        Save the Por for a steel tank. Just an opinion. Good luck with the TD-20!

         

        Thanks for the advice.  Makes sense. So u actually developed a tiny leak at the seam when I 1st shook the tank before I opened the vent. I tried separating the halves after removing all the screws, but it wouldn’t budge. Didn’t want to make things worse, so I put it back together. Eventually I will want to separate the 2 halves and reseal.  But I can’t figure out how without further damaging the tank. Maybe a heat gun along the seam?

        Best Regards

        John Gragg
        RIverside, CA

        Just starting in the hobby, please be patient.

        48 Sea King 5hp GG9014A
        49 Sea King 5hp GG9014A
        48 Johnson TD20
        49 Johnson TD20
        54 Johnson QD15
        55 Johnson CD12

        #282623
        aquasonic
        Participant

          US Member

          Heat along the seam and glancing blows from a rubber mallet should separate the halves.

          Filling up the tank with piping hot water may help.

          #282641
          John Gragg
          Participant

            US Member

            Heat along the seam and glancing blows from a rubber mallet should separate the halves.

            Filling up the tank with piping hot water may help.

            The hot water is a great idea! Thx. I was also thinking about some sort of an air or water bladder put inside to gently lift the two apart.  Need to research a bit, we’ll see…

             

            Thx

            Best Regards

            John Gragg
            RIverside, CA

            Just starting in the hobby, please be patient.

            48 Sea King 5hp GG9014A
            49 Sea King 5hp GG9014A
            48 Johnson TD20
            49 Johnson TD20
            54 Johnson QD15
            55 Johnson CD12

            #282644
            The Boat House
            Participant


              Presently my procedure of choice for aluminum tanks
              is to fill them as much as possible with 50/50 Zep
              Purple Cleaner and Degreaser, and water.
              It has some mild acid in it so it dissolves any corrosion
              in an aluminum tank resulting from moisture over years
              of them resting. I wait till its pretty much done foaming
              and dump most of it out.
              Keeping with the duck tape & bailing wire solutions my
              Boat House is equipped for, I have “Engineered!!!!!”an
              alternative to the shake shake shake.
              Video link – https://youtu.be/-cQ5c3Z5GGg
              Tubs
              .

              #282646
              Buccaneer
              Participant

                US Member

                Tubs, I like your “Flex brush”!

                Prepare to be boarded!

                #282650
                crosbyman
                Participant

                  Canada Member - 2 Years

                  what ???? no colonoscopy pictures inside the tank ??

                  Joining AOMCI has priviledges 🙂

                  #282657
                  The Boat House
                  Participant



                    My scope is old tech. Doesn’t save images for
                    transfer and the image doesn’t photograph well.
                    Best I can do.
                    Tubs

                    #282658
                    crosbyman
                    Participant

                      Canada Member - 2 Years

                      looks good 🙂

                      Joining AOMCI has priviledges 🙂

                      #282661
                      jeff-register
                      Participant

                        US Member - 2 Years

                        Yhere is also a voltage use results.Positive to one ebd (tank frame) & negative to habging metal & all contaminates go to metal hanging in the tank water. Sorry I forget the details. Help.

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