I've been searching for days trying to find a solution or a similar discussion and haven't come across anything.
The problem I'm having started out of the blue. Been in my house for 3 years without any issues, all of a sudden the other day the master shower started making a knocking noise. It is a recurring noise that continues off and on all day and night. I've cut a hole in the wall and been in the rafters and can feel a "pulsing" in the pex pipe feeding into the wall where the shower fixture is.
It doesn't sound like water hammer at all. When I turn on the hot water it stops and I have no pulsing of water pressure. When I close the valve it sometimes knocks and other times doesn't but within seconds to minutes the recurring pulse comes back.
I'm at a loss as to what to do and any help is greatly appreciated. Thanks in advance.