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Sewage smell from rear restroom
My 2018 Liberty developed an awful sewage smell from the rear restroom last night and it is still there this morning.
The only thing slightly unique was that we were driving in a very hard, driving rain. Can that be related in anyway?
Any ideas what to check?
Thanks,
Chuck
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10 Replies
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All conventional plumbing systems have a vent system that is usually terminated outside on the roof. The vent is ahead of the trap and fixture. Our coaches are not always vented to atmosphere through the roof and when that cannot be done the converters use what is called an air admittance valve. It functions as a vent, but instead of going up throught the roof the air admittance valve is usually located in a cabinet or some other convenient location. It closes automatically to prevent the odor of sewer gas from entering the cabinet or room, but if it fails to seat odors from the holding tank can escape.
Just a guess, but if I had odors that is the first place I would look for the source. They are hard to find because they are usually tucked up out of the way so you may need a mirror or even to open some panels to find one. If there is no admittance valve, do you have a device whose trap may have had the water evaporate from lack of use, like a washer?
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As Jon stated, check to make sure you have water in the traps for that restroom…run some water. I have had issues though when driving in high or crosswind conditions that have resulted in smell—assume water is sucked out of traps by wind or something??
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Jon, thank you for the reply.
I did find a Headhunter Vented Loop behind the stool. I assume that is it? I took the top off and cleaned the parts and looked at the seal etc. I didn’t see anything obviously wrong, so I put it back together and tightened it up. Is there anyway to test it?Does a coach usually only have one of those?
I also do have a washer that I’ve never used.
Thank you again for your help.
Chuck
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If you have never used the washer the trap might be dry which opens a path for odors.
The Headhunter vent, if the issue will be the obvious source if your nose gets near it.
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thanks, I found the problem. I appreciate your help
Digging behind the toilet, I found a vent pipe heading to the roof. It had a rubber joining connection that had come undone.
thanks again.
Chuck
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In the future, anything relating to sewer, be sure and call Tom (Admin Jr.)
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Buddy, I see you got your bus out of garage after the remodel job.
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Al, that one might cheaper to maintain !!!!!!
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Humm, what happened ED?
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Buddy, I have a stacker I will sell you to pull behind that new bus to carry that new Snap-On tool box.
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