Originally Posted by fishguts
I just googled it and hydrolock might be the issue. I might be trapping water at the top of the cylinder. Maybe I need a petcock to drain off the water on warm-up until I have pure steam. I was thinking just rotate it until the water clears out, but I may well be inadvertently trapping water when I do that. That would give the dead stop effect for sure. Thanks for the insight.
Is there an issue with the compression ring being pushed out from the steam pressure (not sure if they are keystone rings in these little motors) and that is snagging on one of the ports in the cylinder barrel?