Posted by longtime lurker on January 13, 2001 at 02:03:27:
In Reply to: Re: How to tell if your valves leak posted by Joe S. on January 13, 2001 at 01:30:00:
Mine don't hiss at all! Oh wait, they're vented.
On rotary valves horns, the proper test is to remove the slide, place your thumb over the exposed end of the valve slide, and blow into the leadpipe while trying to depress the paddle, right? If the valve doesn't move at all, it has good compression, i.e. it doesn't leak?