Gas Tank Liner Repair

Question for Fix My HogWhat chemical can I use to help dissolve/remove the tank liner in my Harley-Davidson manufactured gas tank? I tried soaking in Acetone for 24 hours (as Kreem recommends), then shaking for 4 hours with gravel and hex nuts and barely anything has come off.

Roger K

Fix My Hog AnswersHi Roger,

I have tried and tried again with no luck. I finally found a local radiator shop that pressure boils out whatever is loose, and then re-lines it with the red radiator sealant. This works perfectly every time and resolves the gray tank liner issue. The other option is to buy a replacement tank and wish for the best. The shop is Durable Radiator on Thomaston Ave. Waterbury, CT – Dave George is the owner. Wrench Safe, FMH

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13 Responses to “Gas Tank Liner Repair”
  1. Robert
    Robert

    Is there a way to remove the rust and inner liner of tank without harming the paint on the gas tank ??

    Reply
    • Customer Service
      Customer Service

      Hi Robert. There may be a radiator shop in your area that can pressure clean the inside of your fuel tank. Suggest taking care to wrap the tank with something that will cushion and protect and not fall off.
      Whether or not the paint gets damaged depends on who is handling the tank.
      https://www.fixmyhog.com/videos/electrical/

      Reply
  2. dave tuttle
    dave tuttle

    The best and cheep tank liner stripper is vinager….works every time…tried all the crap that you can buy and vinager worked the best ,save your money !

    Reply
    • Customer Service
      Customer Service

      Hi there Don!

      We’d love to help!

      Would you send us a few more details in regards to this? I’ll then forward it to our expert!

      Sincerely,

      Jessica
      Fix My Hog Video Membership

      Reply
      • Mark Vignovich
        Mark Vignovich

        I recently bought a hog that had been sitting, and it has been quite a cash hog to get it back into shape but anyways the tank was very rusted and no one would even attempt to oops on shop tried vinegar to not much luck as it was very bad. Anyways to make a long story short I bought some Metal Restore which is the name of a water based rust removing product and it worked fantastic, safe on the paint too… it was a little expensive as it took about $100 of product to do the tank, on e time soak for 24 hrs but a perfect job… I haven’t relined it yet but thanks for the tip on the radiator shop…. Oh, I got mine at AutoZone the concentrate in a pint that mixes with a gallon of water….

        Reply
        • STAN SLADE
          STAN SLADE

          BOUGHT A 2007 SPORTSTER. SAT FOR YEARS WITH ETHANOL IN THE TANK. ETHANOL ATE A HOLE IN THE VERY FRONT. TOOK OUT PUMP ASSEMBLY. CUT OUT A 2-3/4″ X 4″ SECTION. DUG OUT A WORLD OF CRAP, SOAKED IT IN WATER, THEN VINEGAR, BACK AND FORTH. TAPED HOLES AND SHOOK BBS, 1/4-20 NUTS (TANK DRY) SEVERAL TIMES. SCRAPED WHAT I COULD REACH. FINALLY DECIDED EVERYTHING CAME OUT THAT WOULD. WELDED IN A SECTION OF S-10 HOOD FROM A WRECK, (SKINNED PAINT OFF BOTH SIDES). GROUND WELD DOWN, CHECKED FOR LEAKS, SPOT PUTTIED AND PRIMERED. PUT IN A WHOLE CAN OF RED-KOTE. TAPED OPENINGS AND TURNED IT OVER AND OVER. DRAINED BACK INTO THE CAN. FINISHED PAINTING. TANK IS LIKE NEW.

          Reply
  3. Harold W. Goodman
    Harold W. Goodman

    I purchased an 1980 Ironhead Sportster. Not knowing that the rear area of the transmission had be reweld, transmission blew out I guess. But who ever did the repair forgot to reinstall the Main Shaft needle bearings. Now don’t go saying that is impossible, it is and my engine is poof of it. The area where on the Mainshaft needle bearings ride on has a 1/8 grove around it. The bearing race is oblong, the retaining snap ring gone, the seal retainer worn oblong, there was only one screw holding it in place. I had just replaced the front rear chain sprocket and noticed the seal and retainer had the same oblong wear and only one screw, but I assume it was due to the screws being missing and did not look down the mainshaft, the was some play I noticed in the shaft also, but thought that was due to the age of the engine, 30 years old. I had talked the engine out because the rear motor mount had cracked and broke straight across the center of the “L” area. I thought that was because where the weld was it had been dressed down for the mount to fit against the rear part of the engine. Can the bearing race be replaced? I read in the HD Service manual it has to be heated up in order to do that. Heating the case up, will that weaken the weld rear. I have to replace the Mainshaft and the first two outside gears also. I also thought was odd was the lower aft transmission mount bolt not installed. The thread area was worn away and they never are installed one. I really want to keep the casing to keep the matching numbers. It is a very early 1980 model with a 1979 engine that had 1980 VIN stamped on it. I was able to install a kickstarter because the engine casing was set up for one, like a 1979 Engine. I rode a 79 for almost twenty years.

    Reply