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    #1

    Removing old gas residue

    Im rehabbing the 78 1000C to sell it. Someone here once posted about what chemicals to use in a tank that has a POR 15 liner in it. Just want to rinse it out good to get any gummy sludge that may be in the bottom out. I was thinking maybe Acetone but unsure if that would harm the liner or not. I will be removing the fuel sender unit prior to cleaning.
    So post up your favorites and a little tutorial on your process., Thanks.
    MY BIKES..1977 GS 750 B, 1978 GS 1000 C (X2)
    1978 GS 1000 E, 1979 GS 1000 S, 1973 Yamaha TX 750, 1977 Kawasaki KZ 650B1, 1975 Honda GL1000 Goldwing, 1983 CB 650SC Nighthawk, 1972 Honda CB 350K4, 74 Honda CB550

    NEVER SNEAK UP ON A SLEEPING DOG..NOT EVEN YOUR OWN.


    I would rather trust my bike to a "QUACK" that KNOWS how to fix it rather than a book worm that THINKS HE KNOWS how to fix it.
    Tags: None
    #2
    Por-15 Cleaner Degreaser maybe?
    Ed

    To measure is to know.

    Mikuni O-ring Kits For Sale...https://www.thegsresources.com/_foru...ts#post1703182

    Top Newbie Mistakes thread...http://www.thegsresources.com/_forum...d.php?t=171846

    Carb rebuild tutorial...https://gsarchive.bwringer.com/mtsac...d_Tutorial.pdf

    KZ750E Rebuild Thread...http://www.thegsresources.com/_forum...0-Resurrection

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      #3
      Acetone was the only chemical that DID remove a liner for me.
      Roger

      '83 GS850G Daily rider
      '82 GS1100GK Work in (slow) progress
      ​

      Comment

        #4
        I was thinking dump the gallon of berrymans in and shake it now and then. Thought about that after i posted the thread.
        MY BIKES..1977 GS 750 B, 1978 GS 1000 C (X2)
        1978 GS 1000 E, 1979 GS 1000 S, 1973 Yamaha TX 750, 1977 Kawasaki KZ 650B1, 1975 Honda GL1000 Goldwing, 1983 CB 650SC Nighthawk, 1972 Honda CB 350K4, 74 Honda CB550

        NEVER SNEAK UP ON A SLEEPING DOG..NOT EVEN YOUR OWN.


        I would rather trust my bike to a "QUACK" that KNOWS how to fix it rather than a book worm that THINKS HE KNOWS how to fix it.

        Comment

          #5
          Originally posted by chuck hahn View Post
          I was thinking dump the gallon of berrymans in and shake it now and then. Thought about that after i posted the thread.
          No way. That crap is harsh and will eat the liner. NO NO NO.
          Ed

          To measure is to know.

          Mikuni O-ring Kits For Sale...https://www.thegsresources.com/_foru...ts#post1703182

          Top Newbie Mistakes thread...http://www.thegsresources.com/_forum...d.php?t=171846

          Carb rebuild tutorial...https://gsarchive.bwringer.com/mtsac...d_Tutorial.pdf

          KZ750E Rebuild Thread...http://www.thegsresources.com/_forum...0-Resurrection

          Comment

            #6
            Originally posted by Nessism View Post

            No way. That crap is harsh and will eat the liner. NO NO NO.
            Even the new stuff will strip paint. I have a gallon can that has taken everything I've thrown at it. It will be a small superfund site someday.

            I would use Dollar Store's yellow 'LA's Awesome Degreaser', which is amazing stuff. 50/50 with water or straight up. I have never found a better degreaser for the price, and I'm pretty sure it would work. I'd put some BB's in with it, the sauce to agitate but not go crazy. Just to scuff up the surface of the scum a bit.

            Goof Off is a powerful cutter but doesn't harm painted surfaces. Goo Gone is citrus-based; I prefer Goof Off. But maybe Goo Gone would suit this task. Both of those are too expensive, though, so throw a $1.25 bottle of LA's (if you can find it where you are) at it, I'd say.
            Last edited by oldGSfan; 04-17-2025, 12:19 AM.
            Tom

            '82 GS1100E Mr. Turbo
            '79 GS100E
            Other non Suzuki bikes

            Comment

              #7
              Start with mineral spirits. It's pretty benign, it's a cleaner version of kerosene and will dry clean to the touch. It should dissolve old gas residue and not effect liner or paint.
              78 GS1000 Yosh replica racer project
              82 Kat 1000
              10 990 ADV-R The big dirt bike​
              Some dirt bikes

              Comment

                #8
                Was reading seafoam will break down any varnish. Dumped a can in and will periodically shake it around. We shall see.
                MY BIKES..1977 GS 750 B, 1978 GS 1000 C (X2)
                1978 GS 1000 E, 1979 GS 1000 S, 1973 Yamaha TX 750, 1977 Kawasaki KZ 650B1, 1975 Honda GL1000 Goldwing, 1983 CB 650SC Nighthawk, 1972 Honda CB 350K4, 74 Honda CB550

                NEVER SNEAK UP ON A SLEEPING DOG..NOT EVEN YOUR OWN.


                I would rather trust my bike to a "QUACK" that KNOWS how to fix it rather than a book worm that THINKS HE KNOWS how to fix it.

                Comment

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