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-   -   RV Bathroom smell (https://www.irv2.com/forums/f258/rv-bathroom-smell-469152.html)

TRose 11-15-2019 12:42 PM

RV Bathroom smell
 
Hi, we are noticing a smell once we take off to travel, but not when stationary. Thoughts?

Old Heli 11-15-2019 12:57 PM

turn the bathroom fan on when your done..:laugh:

Bahamaniac 11-15-2019 01:12 PM

When you empty your waste tanks, do you add 5 gallons of water back in the tank? That will help with odors when traveling.

TCollins 11-15-2019 01:48 PM

Don't travel with the roof vents open. Make sure there is a little water in the toilet, just enough to cover the bottom.

bobmac 11-15-2019 02:07 PM

Make sure there is water in the shower and basin traps to stop odor from the grey tanks.

Tradition 11-16-2019 03:54 PM

We pour fablousa (no sure of spelling), in all sinks commode and sometimes pine sol.
Have you checked roof top vents for obstruction and cleaned all p traps
Quote:

Originally Posted by bobmac (Post 5039602)
Make sure there is water in the shower and basin traps to stop odor from the grey tanks.


nomoreosama 11-16-2019 04:13 PM

Do you have vacu-flush? Keep some water in the bowl.

phays 11-16-2019 04:15 PM

When sitting still and you turn on a vent fan, do you get odors? If so, perhaps your air admittance valves under your sinks are faulty. If you have a black tank flush system there is a vacuum breaker in the line that may be faulty allowing odors into the rv.

RKins 11-16-2019 04:21 PM

Do you have hookups for washer? Make sure the trap is full there too - that is straight into the grey tank.

MarvinG 11-16-2019 08:59 PM

Depending on your rig (we need more info, perhaps you will want to add such to a tag for your posts). My 1997 Fleetwood Bounder had a terrible odor once we used it for a weekend. Driving home was sickening, didn’t matter whether we had windows cracked, vents open or closed. Installed the Venturi caps on both gray and black vents on top of roof and problem was 100% solved.

TheWoodBoss 11-18-2019 01:13 PM

Camco makes some venturi vent caps I'll be installing soon.

Cincy Steve 11-18-2019 02:04 PM

Quote:

Originally Posted by RKins (Post 5040899)
Do you have hookups for washer? Make sure the trap is full there too - that is straight into the grey tank.

This. ^^

Friends, w/a Discovery, found that because they NEVER used the washing machine, the trap was dry & allowing a septic odor inside.

yeloduster 11-18-2019 02:38 PM

In many motorhomes the P-Trap under the shower is really shallow. Even if it has water in it there might be enough pressure from a wind gust to force a bubble of bad smelling stuff from the tank into the coach.

I've used these on my last two RV's and problem totally solved.

https://www.amazon.com/Camco-40597-B...46971080&psc=1

mlorlomoski 11-18-2019 05:11 PM

Check the in-line vents for the sinks. We had the same problem this summer and replacing these vents solved it completely. We got Oatey 39012 ABS In-Line Vent 2X2 13/16 from Amazon, dirt cheap and easy to install. Look at the piping under the sinks and you should find them next to the drain line. These go bad and don't seal allowing the tank stench into the coach when moving. Just unscrew them and screw on the new ones. I didn't even need any tools, they came right off.


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