Compression readings

Jim Lusk said

Again, no air should leak past the valves. The valves are either bent or the seats were not prepared properly. Take the heads off and shine a light in the port. If you see it past the valve you have a problem.

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I'm going to get beat up for saying this. Yes in theory you should not have anything leaking past the valves. But I see motors that leak a little, run fine and still have good power. Sometimes a leaky valve can be stopped or reduced by lightly tapping the valve with a hammer. And yes sometimes a leaking valve or valves can be a problem. A big problem. I have found it's not always cut and dried a little leaking (while not the ideal situation) might not be the problem at hand. Then again it might be.