BC,
I had the exhaust/intake manifold off the motor, I used a piece of rubber heater hose as a stethiscope and I was able to listen into the exhaust ports and intake ports individualy. I did make note of the air noise at the dipstick tube which from what I have learned is normal as all motor will lose some air to the crankcase past the rings. I listened at each manifold port when I did the test so was able to detrmine no air leak in any of the intake valves and three slight barely audable leaks from the exhuast which by the way were not adjacent to each other if this makes clearer what I did.
-Mike-
