SoundGuy wrote:
Leaking city water inlet check valve is the most obvious place to start.
Theb2b wrote:
I'll start here, not sure what I'm looking for but start the trace and see what I find.
Obviously you want to know if the city water inlet check valve isn't seating properly and therefore leaking air into the system. Simply seal it with a
threaded water inlet plug and if solves your problem you've found the culprit. If not, continue looking at the rest of the system ... no magic here, you've got air leaking into the system somewhere.