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Old 08-25-2014, 03:58 AM   #1
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Smelly problem

We are having a little problem with our motorhome. If we happen to have to travel without emptying at a dump station we get a bad odor. Its noticeable as soon as we pull out of a campsite. We didn't have this before. Can anyone help? Would really like to get this fixed ASAP. Thanks for any help or ideas you can give.
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Old 08-25-2014, 08:44 AM   #2
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Sounds like a venting problem. I'd check the vent pipe where it comes out of the roof first to see if it's restricted.
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Old 08-25-2014, 02:36 PM   #3
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Option-2--check the drain hose connection between kitchen sink and the side wall opposite/underneath the shower stall....just trace the hose back to the wall....
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Old 08-25-2014, 02:59 PM   #4
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We purchased two 360 siphon roof vents and installed them. It was an easy install and they work fabulous. No need for deoderant any longer.

360 Products Inc
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Old 08-26-2014, 01:55 PM   #5
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Thanks so much everyone. We ordered the 360 roof vents last night. This forum is so great for helping with any little problem that comes up. Safe and happy travels everyone!
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Old 08-26-2014, 02:56 PM   #6
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Over time, a lot of the rotating vents wear and begin squeaking in the wind--usually in the middle of the night--good luck....Meanwhile, check yr kitchen sink drain at the wall, between the slide and wall--it will cost you nothing to check it....smile
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Old 08-26-2014, 03:10 PM   #7
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Quote:
Originally Posted by tonka96 View Post
We are having a little problem with our motorhome. If we happen to have to travel without emptying at a dump station we get a bad odor. Its noticeable as soon as we pull out of a campsite. We didn't have this before. Can anyone help? Would really like to get this fixed ASAP. Thanks for any help or ideas you can give.
tonka96
If you can smell "sewer odor" inside your coach something needs fixing, or you are doing something wrong.
Do a search here on iRV2 for "sewer smell".......(you'll find the answer there).
BTW, add on "gizmos" or "gadgets" no not fix the root of the problem, but some owners are satisfied with a bandaid approach.
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Old 08-26-2014, 03:31 PM   #8
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What others have indicated to check, I believe, are air admittance valves located under each sink in your rv. A rubber flap allows air in but not out to assist your grey water tank to vent properly. They can be purchased at most big box stores and simply screw on hand tight. Have had the rubber flap in some go bad allowing grey tank odors to escape through the sink plumbing into the coach. We keep a couple on hand for replacement as needed.
http://www.lowes.com/pd_24372-143-85539K_0__?productId=1069119&Ntt=plumbing+vents&pl =1&currentURL=%2Fpl__0__s%3FNtt%3Dplumbing%2Bvents &facetInfo=
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Old 08-26-2014, 03:50 PM   #9
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What others have indicated to check, I believe, are air admittance valves located under each sink in your rv. A rubber flap allows air in but not out to assist your grey water tank to vent properly. They can be purchased at most big box stores and simply screw on hand tight. Have had the rubber flap in some go bad allowing grey tank odors to escape through the sink plumbing into the coach. We keep a couple on hand for replacement as needed.
http://www.lowes.com/pd_24372-143-85539K_0__?productId=1069119&Ntt=plumbing+vents&pl =1&currentURL=%2Fpl__0__s%3FNtt%3Dplumbing%2Bvents &facetInfo=

Agreed, but, I have taken ours off (simply unscrew it from the stand pipe) and washed then along with massaging the underside of the little flap with your finger and reinstall. If all else fails, replace them.
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Old 08-26-2014, 04:56 PM   #10
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Agreed, but, I have taken ours off (simply unscrew it from the stand pipe) and washed then along with massaging the underside of the little flap with your finger and reinstall. If all else fails, replace them.



Now that would be interesting to see.
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Old 08-26-2014, 07:36 PM   #11
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I had the same problem if I didn't dump and wash out my gray tank after camping. Every time we left the campground without dumping, we would get a strong sewer smell within 15 or 20 minutes. The water in the P-traps would slosh out and allow vapors from the tank to get in. Installing a 360 siphon completely fixed it. I only put one on the gray tank vent because the black tank was effectively sealed by the toilet valve. Did this four years ago and no problem since.
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Old 08-26-2014, 11:45 PM   #12
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We had same issue in our coach which was plumbed for washer/dryer, but didn't come equipped with one. WRV didn't glue the cap onto the drain for the washer and it had fallen off, emitting sewer oder while driving. Gluing cap on solved issue. Don't know what coach you have or if it is plumed for W/D, but could be possible issue for you.
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Old 08-27-2014, 07:36 AM   #13
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We had same issue in our coach which was plumbed for washer/dryer, but didn't come equipped with one. WRV didn't glue the cap onto the drain for the washer and it had fallen off, emitting sewer oder while driving. Gluing cap on solved issue. Don't know what coach you have or if it is plumed for W/D, but could be possible issue for you.
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P-traps can/do dry out and lose their seal if unused.....often simply adding a cup of water to the washer stand pipe, (and/or the shower drain), will eliminate the odor.
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Old 08-28-2014, 01:13 PM   #14
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mel s - Yes, that is exactly what I used to do before installing the syphon 360. However, California has basically ZERO decent roads so the water sloshes out of the traps very quickly and the smell starts up again. We don't have to keep pouring water down the drains anymore since installing the syphon.
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