I have two bathrooms back-to-back, one toilet gurgles and is starting to blow back water out of the bowl. In reading several responses to similar questions some answers suggest a partially clogged line and/or vent at various places in the waste line. One vent serves both bathrooms as they are back to back. Could this be a clog within the toilet? Do I need to pull the toilet and snake the line? Thanks for answers toward a solution!
