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Open Roads Forum  >  Fifth-Wheels

 > 2020 Jayco 36FTBS grey water sewer smell in trailer

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ford truck guy

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Posted: 08/04/20 01:27pm Link  |  Quote  |  Print  |  Notify Moderator

do you smell it more when the HOT water is running?


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pcm1959

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Posted: 08/04/20 02:26pm Link  |  Quote  |  Print  |  Notify Moderator

Here's an excellent explanation of the holding tank vent system.

https://www.youtube.com/watch?v=E731e8asMyI


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Fsch5748

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Posted: 08/04/20 02:34pm Link  |  Quote  |  Print  |  Notify Moderator

Yes

ford truck guy

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Posted: 08/04/20 02:52pm Link  |  Quote  |  Print  |  Notify Moderator

Is the yes to the hot water?

If so, open your hot water tank and flush real good... just let the water run through the tank for a bit, that should clear up the smell..

You can also sanitize the system after

Sometimes I get a stagnant water smell if I keep my hot water tank filled between trips....

pcm1959

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Posted: 08/04/20 07:25pm Link  |  Quote  |  Print  |  Notify Moderator

Fsch5748 wrote:

Located roof vents no visible blockage and minimal odor!
I’m inclined to think vent pipe extends into holding tank to far!
Odor gets stronger as tank fills!


I totally agree on this one. The pipe is installed to deep into the tank OR has slipped down. Do you notice this with the black OR grey tank. Mine uses one vent stack joined by a tee so only one vent on the roof. One way you can determine if you have a venting problem is to get on the roof, place a single ply tissue over around the vent (or stick your nose around the vent to smell for odor) and then have someone flush the toilet as well as pulling the drain plug on a partially filled sink. A properly vented tank will expel air from the vent pipe on the roof.
I was having this problem on my rig and I fixed it myself. The key is being able to get to the top of the tank which I was able to do fairly easily.

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Posted: 08/04/20 08:21pm Link  |  Quote  |  Print  |  Notify Moderator

Thanks for the reply. I have 2 grey tanks and 2 black tanks.
The smell comes from kitchen area only. The 1/2 bath off kitchen is rarely used! Wife insisted on it, funny it’s main use is storage! The smell definitely comes from kitchen grey tank.

Retired JSO

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Posted: 08/04/20 08:44pm Link  |  Quote  |  Print  |  Notify Moderator

We were experiencing a sewer smell as we exited the shower. I opened the cabinet below the lavatory and was almost consumed with the smell. I removed the air admittance valve and found one at Home Depot cost about $6.99. It didn’t stop the smell. Located another at Home Depot, Oatly brand about $12. It worked and stopped our problem. Don’t waste your money on the cheap one.





pcm1959

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Posted: 08/05/20 05:34am Link  |  Quote  |  Print  |  Notify Moderator

Retired JSO wrote:

We were experiencing a sewer smell as we exited the shower. I opened the cabinet below the lavatory and was almost consumed with the smell. I removed the air admittance valve and found one at Home Depot cost about $6.99. It didn’t stop the smell. Located another at Home Depot, Oatly brand about $12. It worked and stopped our problem. Don’t waste your money on the cheap one.


I replaced all of ours with the $7 Oatey model when our rig was new. The ones that come in RVs are typically the cheapest available. I think one of them may have become faulty after 6 years now. So I'm researching what will be a better replacement. Studor generally has a good reputation but I have read better reviews about the Oatey models.

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