Help! PC not venting properly
I hope you all don't get sick of me. I decided to run an empty canner to practice with my new weight set, but didn't get to that point. The steam won't reach a steady stream (left on high for half hour). There is a flapping sound which I have never heard before. I see the steam funnel for 5 or 6 seconds and then it disappears for one or two seconds and returns. This used to happen until it reached a full steady steam and then I would time for 10 minutes. There doesn't appear to be any leaks around the gasket or the valve. It is a mid-70s harvest gold 23 quart Presto canner. Any help would be greatly appreciated.