Sewage odor

[Marv & Jean Wheeler]

If you completely drained the sewage lines you have no water in the
traps to prevent the sewage smell from entering the coach. With no
water in the trap to the vent pipe the wind could generate positive
pressure in the holding tank and then then odor could come up through
the commode since there is no water in that trap.

That's my guess.

Marv
2004
M380 Ocean Shores, WA

--- In WanderlodgeForum@yahoogroups.com, "Scott Forman" <sforman@r...>
wrote:
>
> My tanks (and all plumbing for that matter) have been completely
> drained since the end of November. When I drive my coach down the
> road, a sewage smell fills the coach. Once parked, the smell will go
> away and not come back until I drive again.
>
> Obviously I need to clean the tanks out better...but any ideas why
the
> smell only comes when I am moving? Any tricks on cleaning the tanks
> out? I have a rear bath.
>
> Scott Forman
> 'Tiger Pride'
> 82 FC35RB
> Memphis
>