So, I finally got around to rebuilding an old Titan, put it up on a tank to fiddle with the IR and ran into the following. As I open the valve there is a momentary hiss of air out of the 1st stage. Once the valve is completely open, the flow stops. Then, when I draw on the 2nd, the flow comes back but at a lower rate. I adjusted the IP from 100 to 135 and this still happens. The IP held steady for 30 minutes.
What did I do wrong and how do I fix it?
What did I do wrong and how do I fix it?