Hi WFM folks. My neighbor has a K301 Kohler 12 HP engine that will not run. It has spark, it has fuel (plus I have sprayed in starter fluid), and it has air. All the basics. Not even a pop. I'd like to help the guy but as it is not my tractor I am being cautious...overly cautious. I know it's tough to check he compression with the ACR engines but on my JD112 I get about 70PSI on starting rotation. On his I get about zero. With his spark plug in I can rotate the crank by hand easily. When I old my thumb over the s-plug hole and rotate the crank..no pressure at all. I can see the valves moving. I haven't pulled the head as I want to make sure I have not missed something simple before I do that. I've changed out points, condenser, plug and coil. Still no pop. Again, I have spark.Did I miss anything simple or should I just go ahead now and pull the head?