Im at work but I can catch a quick break for this. So you need the cyl your testing at tdc of the first aka compression stroke. I dont remeber standard psi off hand so youll have to look it up. I think its 120 or 60 but i work with psi for a living and sometimes it gets mixed up. With proper pressure or at least close and the cyl you are testing at the tdc of cmpression stroke you will need to listen for air leakage. A mech stethascope helps. Pull the valve covers and listen where you suspect leakage. Also look for bubbles. Your leakage numbers are climbing as you put more air into the system because your valve s are open. The leak detector system is designed to help you find a valve that is not working, worn rings or other head problems and measure how badly said component is not doing its job. Let me know.
