Quote:
Originally Posted by STJ
Sorry for the confusing we do stay at full hookup parks but when we do we never leave the black tank open, and the smell only happens when the flush valve is open, when closed it’s fine.
After reading some of the comments I am thinking the black tank vent could be clogged , although when I dump I don’t seem to get any vacuum stoppage with the toilet closed as it always is.
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Do you put a p trap in your sewer hose? Basically just have a low spot where it dips and can fill with water. Same concept as any p trap, prevents the sewer gases from flowing back into your RV.