Yes. The I can see the piston going up and down. And I can hear the air sounds of the piston through the carb, exhaust and spark plug hole as I actuate it by hand.
A question if I could:
I've been into the galley on a few Briggs but this is my first Kohler. I have the valve cover off now and notice a hole next to one of the pushrods. My guess is this is the port in which oil finds it's way into the galley. My leak down test was done when the valve cover was on. With the cover off, when I turn the flywheel by hand, at certain points, air whooshes out of this hole.
Using my limited knowledge and logic, I'm guessing that would happen during one or both of the downward cycles of the piston when crankcase pressure rises.
Am I correct?...If the head gasket is bad between the cylinder and the galley, would I be able to test this with the valve cover off by charging the cylinder at TDC with the valve cover off and checking for air shooting out of that hole? Or am I off base here.