It sounds like the pump is not priming. Not sure if this will help, but I would partially fill the tank using the city water connection, then revert to the siphon fill. If you can access the 400 wate… (View Post)
That tube is the overflow for the CSS Alde expansion tank. Can you watch the tank and actually see it back up into the tube?The Alde auto air bleeder drain is under the Driver side rear just below th… (View Post)