Short version: I have a leak in my gas tank, It appears that it is NOT leaking at the soldered seam along the bottom of the tank, but is leaking from under the attached (spot welded?) mounting tab. I do not see any cracks / damage to the tank on the inside with an inspection camera. I’m not sure how to fix this as I can’t identify the source of the leak. I am considering:
Kreem tank liner: https://www.revzilla.com/product/kreem-fuel-tank-liner
Any suggestions?
Long version: I have a 1972 Kawasaki 2 stroke motorcycle that I recently moved from California to Illinois. I left the bike with the gas tank full and added Stabil in early June. When I returned to Illinois yesterday, I found the tank sealer / liner that I put in the gas tank 20+ years ago had separated. (I don't remember what I used.) After removing the failed liner, I soaked the tank in Evaporust for a couple of days and found that it was leaking at the back. It seems the tank has been leaking from that area for a long time as the paint is gone there, but it was such a slow leak that I never noticed. (That area was coverd in black grime before I cleaned it and it is hidden under the seat.) It is now leaking fast enough that I cannot use the tank. The rust is removed from the tank and I need to fix the leak so I can use the bike.
Pictures of the inside and outside of the leaking area are below (note that there appears to be a seam on the inside of the tank along the tank centerline that is not visible on the outside). You can just make out the outline of the bottom of the mounting tab on the inside of the tank. (By the way, the dates on the inspection cam pictures are wrong.)
Any suggestions on how to repair this leak?
Kreem tank liner: https://www.revzilla.com/product/kreem-fuel-tank-liner
Any suggestions?
Long version: I have a 1972 Kawasaki 2 stroke motorcycle that I recently moved from California to Illinois. I left the bike with the gas tank full and added Stabil in early June. When I returned to Illinois yesterday, I found the tank sealer / liner that I put in the gas tank 20+ years ago had separated. (I don't remember what I used.) After removing the failed liner, I soaked the tank in Evaporust for a couple of days and found that it was leaking at the back. It seems the tank has been leaking from that area for a long time as the paint is gone there, but it was such a slow leak that I never noticed. (That area was coverd in black grime before I cleaned it and it is hidden under the seat.) It is now leaking fast enough that I cannot use the tank. The rust is removed from the tank and I need to fix the leak so I can use the bike.
Pictures of the inside and outside of the leaking area are below (note that there appears to be a seam on the inside of the tank along the tank centerline that is not visible on the outside). You can just make out the outline of the bottom of the mounting tab on the inside of the tank. (By the way, the dates on the inspection cam pictures are wrong.)
Any suggestions on how to repair this leak?
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