Coach Odors

[rlj4580]

Four months ago we upgraded to a 2006 Travel Supreme desiel pusher (bank repo) motorhome. We love the coach, however , we now notice bad odor when we begin driving the Rv. Smells like either grey water or black water odors. Lasts for 20 - 30 minutes while we are driving , then seems to disappear.While we are camping... no problem.

We have replaced a rubber gasket (seal) in toilet bowl that was hardened and cracked ... thought that was problem. Also installed vent attachment on top of rv. Made sure we have sink drain plugs in place. We have also made sure we treat both grey water & black water after each dump!

We are baffeled by this! Any suggestions would be appreciated.

Jordar

["007"]

jordar welcome to irv2.
Under your sinks bathrooms and kitchen you have vents with rubber seals also plus if plumbed for washer the trap may have no water in it.
Here is a link to different type vents.

[ralper]

Is there water in the tub/shower trap?
Repair or replace the above mentioned vents under the sinks. They are 1.5" diameter by about 3" tall.

[wagonmaster2]

I have a 2004 Itasca Meridian and have looked under the sinks several times and have been unable to see anything that looks like these vents. Will they be somewhere around the P trap or further back against the wall? I assume they should be in the same drain line as the sinks.
Anyone have any pictures of what these vents look like under the sink?

Wagonmaster2

[AFChap]

Wagonmaster ...they will be on the very TOP of a pipe that goes up and stops, likely behind the trap a bit, and definitely ending several inches higher. I find mine more by feel than by sight. The vacuum breakers (they are NOT vents) normally screw on, and will likely look and feel like a cap until you get them off and look inside. Their purpose is to allow air into the tank when you are dumping ...without them, the suction of dumping the tank could suck the liquid out of the traps which would then allow tank odors into the passenger area.

[RVhauler]

The vaccuum breakers can be purchased at Lowes/Home depot for aprx $6 each. there will be a breaker for each sink

["007"]

Here is your picture.