Crankcase pressure

[race7820000]

I got a cat crank turning tool coming. So I can watch the valves open and close etc. When I pressurerise the intake system it won't hold more than 21psi. I did a cut out test and it says they pass. When I hit cylinder 2 it barely changes the tone of motor. Number 5 is maybe a little worse but not much

Cyl 1,3,4,6 all sounded the same, like they were actually cut out.

I attached a Pic