RV Toilet Bubbles or Burps When Flushed? 6 Causes and Fixes
TL;DR: An RV toilet that bubbles or burps when flushed usually has air or gas trapped in the black tank system with nowhere to go. The most common causes are a full or nearly full black tank, a blocked roof vent pipe, a pyramid plug under the toilet, or a clog in the drop pipe. … Read more