Brief Description: Fuel tank tightness testing - preparation of the m
So I followed the recommendation to use acetone and a coloring agent. I could not find gentian violet easily, but got some fluorecine that is soluble in water or alcohol, but not acetone. So I used a mixture of acetone and fluorecine and added just a little water (10%)
With the mixture in the tank and all plugs put in place, the vapor of the acetone pressurised the tank, upon opening the tank the pressure was released with a hiss.