320BHDS toilet building pressure??

[AJCR2011]

This being ou second weekend out, I have not noticed this before, but when the toilet has been used for the reason of a #1 and then "flushed" it seems as though there is pressure in the tank as it actually bubbles back and pushes the "waste" out in a splash before going down. If this was at home I would say that the vent was clogged, is there a vent for TT's??

[OldCoot]

Sure is and it could be the vent pipe is too low in the tank. Crawl up on the roof and pull the vent cap and measure to the bottom of the tank and then catch the edge of the pipe. There should be at least 5"-6" difference. Could be the vent is just plugged with something. Stranger things have happened.

[AJCR2011]

Thanks a bunch. When it gets done raining I will def check that out.