Leaking intake valve

[mmeric8802]

After lap valves in no 1 cyclinder ,pump 100 psi air in only holding 60% remove the head few times no cracks am i missing something help please mator is F80tlrb thanks in advance

[boats.net]

Check to see where the air is coming out, intake manifold, exhaust manifold or crankcase to see which valve is not sealing or if it's piston rings.