We seem to be getting a sewer smell from our pantry in our 3950. I would assume this means I have a leak in the vent pipe going out the roof. Has atone opened up the floor or the walls to see the connections to the back black water tank?
2014 Voltage 3950 Epic III
2016 Ram 3500 Diesel 4wd, Long Horn Dually long bed
I don't know about the 3950, but my 3895 had the same problem and it was a loose cap on the washer/ dryer drain in my pantry. I don't have the washer/ dryer so the drain was just capped with a plastic cap that did not fit tight and allowed sewer gas to come out.
Just a thought , but I would check there first.