Sewer gases smell

[Frankthetank]

Hey all,
I hav a Windsport 31s 2018. When we r traveling, sometimes we smell what appears 2 b sewer gas even after cleaning blk n gray tanks. It "seems" like we smell it on down grades or when climbing..ive asked my wife 2 B honest n come clean, but she insists it's not her "gas." Any thoughts out there?????

[BandG]

Originally Posted by Frankthetank

Hey all,
I hav a Windsport 31s 2018. When we r traveling, sometimes we smell what appears 2 b sewer gas even after cleaning blk n gray tanks. It "seems" like we smell it on down grades or when climbing..ive asked my wife 2 B honest n come clean, but she insists it's not her "gas." Any thoughts out there?????

I attended a recent seminar by the RV Doctor (Gary Bunzer) and he recommended a 360 siphon vent to help eliminate black tank odors.

We were good until our last trip & we hit a few mile stretch where we started getting unwanted blank tank odors in the coach.

Here's what I plan to do...(I'm going to do both steps).

https://www.youtube.com/watch?v=nRfs8PNF2YI

[Frankthetank]

Thx B n G 4 ur suggestions
We will try both too.

[nosticks]

Sink and shower traps are empty allowing gas to vent. Run some water down the drains.

[blw2]

safe bet that your air admittance valve under your bath sink is leaking or loose.

Could be empty traps, but seems to be common that the factory doesn't tighten these thing sup. i found both of mine to be less than hand tight. We had the smell too. Odd thing was that it wasn't all the time or even on every trip.

Anyway, I found one of them to leak when I took it off, inverted it, and put some water in... so I found a hardware store near the CG we were at at the time and just bought two new ones.

I think we may have had a time or two when we had a minor odor problem form the tanks but nothing like before....more likely just from during the flush, etc...or maybe when i don't get a full dump... I've taken to keeping a small bottle of the blue stuff on hand, and if it gets to smelling bad, pour a little in and it knocks the odor down very well untill we get to a dump station... just need it on occasion

[brucev]

See what blw2 said. I also have one under the galley sink. The valves are easy to change and less than $20 on Amazon.

[Frankthetank]

R u talking about the p-trail?
Also, is the "blue stuff " toilet chemicals?
Thx 4 ur help. I'll ck the valves.