if at all possible replace the tank.. even with a smaller one that is easy to remove. Used a 19 gallon plastic moeller to replace the 26 gal tank I had in my old boat. warning, (seepage) pin holes are highly likely to magically appear after cleaning!
Also don't forget to clean the pick up tube that draws the fuel from the tank.. How do I know?
Also don't forget to clean the pick up tube that draws the fuel from the tank.. How do I know?
