Hello all, When we flush the toilet we get a burp/bubble before stuff flows down. It acts as if there is no vent air. Could the vent be plugged. If so how do I clear it? Dave
If your tank has been emptied and still does this then suspect that you have the pyramid built up and blocking the pipe going into the tank. The vent is the last choice even with a plugged vent stack there should be enough room for the air in the pipe to be compressed into the tank unless the tank is near full.