[&o] I've done a compression test & found the #2 cylinder way low. added a little oil and the compression came up nicely. Now I am doing a leakdown test with my home made tester appling 90psi into the #2 cylinder and no leakage - should I take the car out for a drive and get the oil hot?

Here is the buggling thing: My set up is a needdle valve - gauge - and a hose (off of a compression tester) connected to the spark plug port. I have 90psi going to the TDC of the cylinder, ok. I close the needle valve leaving the 90psi from the valve to the TDC pressured, no leakage. Now here is the confusing thing - when I turn the crankshaft several time my cylinder remains pressurized - it will not exhaust, it will not even losse a pressure when that particular piston is traveling down. You think with the extra displacement I gained I should have lost some pressure.

I probably could have said all of this more breifly. CAn somebody help me? Thanks

 

I sent you a PM, but in short a compression tester hose has a 1-way valve that will not allow the air to go into the chamber. The pressure is being held by this valve and never entering the chamber.