Elnar, thanks for the heads up. I checked the air valve and hose. I was going to replace the hose, until I saw the price ($40 for a 2" hose?). I reclamped it, cleaned the flapper, and replaced the gasket on the valve. I removed the pulse air equipment. The push rod tubes looked good.
montmil, big commission, that's funny. I don't dare take my wife on a car lot until I'm ready to trade, she always finds something, especially the pretty one with the moon roof and a snatch heater in the leather seats.