So imagine my horror when I found a small bubble in my relatively new (1 yr) paint job. Bottom left edge of the tank, the size of 3 pin heads. Close inspection showed paint lifting in a larger area as well. I knew right away I had a pin hole leak (or 2). Plan to fix: -Exterior fix with JB weld and Glass lite -Line the inside of tank with Por15 Here's what I did to fix it. -Pulled the tank and Drained the fuel -Used my bore scope and found that every inch of the tank was clean except the tiny area of the seam on that left side which is the low spot and the usual place for rust to start -I flushed the tank and put in 4 litres of Evaporust, and let that sit overnight -Drained & suctioned the Evaporust out and flushed the tank again -Put in a splash of acetone to clean and dry the inside of the tank in the "repair area" -shaved off all the paint in the repair area -punched the pin holes into larger holes until I found firm metal and used a small drift and hammer to dimple the area to give me some depth for the external part of the repair. -light grinding with a Dremel tool to clean the surface -Used original JB weld 2 part metal epoxy and pushed that through the holes until it extruded to the inside of the tank -Once the JB dried (24 hrs) I applied Evercoat Glass Lite water tight resin filler -Once the JB and Glass Lite was dry I Cleaned the inside of the tank with the Por15 degreaser per the instructions, followed by Por15 metal prep. - I used a heat gun to completely dry the inside of the tank - I emptied a full 8oz can of Por15 liner into the tank to coat it. Now I was sceptical that 8oz was going to be enough in this large tank, as it happens, 7 oz would have done the trick, so because you cannot drain the excess liner from an Interceptor or VF1kr tank, you have to keep rotating the tank (8 hours in my case) so you do not get any pooling of the liner (which may cause you issues later on) -Once that dried I used pro grade surface filler on the outside to finish the repair. Time elapsed for repair: Saturday to prep and apply the JB weld, 24 hrs to dry Sunday to prep and apply Glass lite, 24 hrs to cure Monday to prep and apply the Por15 liner - 12 hours After the liner is in, 96 hours minimum must elapse before you add fuel. My will sit for weeks or months before I add fuel. --------- Tank is now back at my painter for a touch up, lucky for me I still had half a pint of blue to match. Here is the offending pin holes with paint removed Inside the tank after it was flushed, before it was prepped and lined. Here I am drying the tank before lining it (2 hours to dry). I made a funnel/deflector from aluminum foil to ensure the heat from the gun didnt damage the paint around the filler hole. Also, by rotating the foil deflector inside the filler neck, I could also direct the heat to the lower part of the tank more easily. You can see the repair area already has the JB Weld and the Glass Lite applied in this pic. Note that a tank will NOT fully dry by itself, you MUST use hot forced air to dry it. Drying it this way not only ensures its completely dry, but it limits the amount of flash rust you get. I got none in this case.