I do hear a click when I plug it in, and more muted sound when I unplug it. The led light does not come on even when everything is open. Should I take it apart and try to clean it out?
Edit: Do you know what part number will close off the outlet of the regulator? I want to take the solenoid out, and close off the outlet and test for a leak. If there isn't a leak, then it has to be the solenoid, right?