Black tank smell in coach
I have had our coach for 7 years now and every once in a while while driving I get a really bad smell coming into the coach. It smells like the black tank is venting into the coach. The weird thing is...
Forum Discussion
Doug,
You always give good and experienced commentary, but in this one case I have to respectfully disagree with you. In my own coach, we would experience black tank odors in the coach if the potty were flushed while driving. I stopped up and blocked all the air admittance valves, and then on to blocking all vent fans. Still we would get the smell from time to time. It did seem to be related to windy conditions. A little more research and design understanding on my part showed that flushing the potty left an open path to the waste tank. If the pressure inside the coach was less than waste tank, then the odor would migrate into the coach.
I spent the 50 bucks to install two of the wind vane ventilators on the two roof vent pipes. No more smell.
You always give good and experienced commentary, but in this one case I have to respectfully disagree with you. In my own coach, we would experience black tank odors in the coach if the potty were flushed while driving. I stopped up and blocked all the air admittance valves, and then on to blocking all vent fans. Still we would get the smell from time to time. It did seem to be related to windy conditions. A little more research and design understanding on my part showed that flushing the potty left an open path to the waste tank. If the pressure inside the coach was less than waste tank, then the odor would migrate into the coach.
I spent the 50 bucks to install two of the wind vane ventilators on the two roof vent pipes. No more smell.
