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Old 09-25-2014, 06:37 PM   #1
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Bad grey water smell

I've read all the previous posts I can find on this subject, tried many different things but can't find it.
2013 2703WS Emerald
The smell is under the kitchen sink when the shower is used.
Grey tank can be empty or have water in it.
Traps are full of water.
I have replaced the air admittance valve with new ones from Lowes that have a bigger rubber flap.
Vent is open to the roof. I have run water down and had it drain out.
I've seen behind the furnace and have found the bathroom sink and shower are plumbed together and go to the same drain as the kitchen sink. The part I don't understand is that the same pipe that is the drain is also the vent pipe to the roof. I've plugged the hold through the floor, but the smell is the worst under the sinks.
I've taped saran wrap around the air admittance valves to see if that makes any difference.
I've had to cut both pipe for the sinks in the kitchen and bath to get the drains to line up to drain properly and not leak. Its not coming from that rubber coupler.
Any thoughts would be appreciated.
Going to the dealer Tues. I've called him and made the appointment as our electric side of the water heater went out.
Bob
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Old 09-25-2014, 06:59 PM   #2
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I would be hunting for a soured dish cloth, mouse, etc. if you are sure of all the plumbing.
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Old 09-25-2014, 07:46 PM   #3
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Thanks for the quick reply OC. It's not that. I just can't get my head around the fact that the drain is the same pipe as the vent.
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Old 09-25-2014, 07:51 PM   #4
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We've camped for a long time but this trailer is really starting to make me think otherwise. I love to change things to the way we want them but stuff like this really gets me. The dealer is being very cordial about the whole thing. He really understands that " it is the nature of the beast" that he is stuck with fixing everything.
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Old 09-25-2014, 08:06 PM   #5
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Do you know if the pipe traps under the sinks are staying full of water? the water in the traps keep the smell out of the tanks, I am sure that you know this but thought it was worth mentioning.
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Old 09-25-2014, 08:08 PM   #6
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I don't think the vent being on the same stack as the drains is much of an issue. I see the same in houses all the time.

I'd start with flushing the grey tank really well. They do build up debris after all (hair, bits of food, etc..) Fill it all the way and then dump a few times the next time you're at a full hookup site or at a dump station with some time to kill. Then add some deodorizer, either the GEO method or some basic TST or whatever you happened to use for the black normally is probably fine. Drive that around until your next camping trip and then see if the grey still smells.
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Old 09-26-2014, 09:32 AM   #7
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Thanks Kaadk
I took a shower this morning with the air valves in the kitchen and bath sealed and put water in all the sinks. No smell. DW took a shower and I unwrapped the kitchen valve and the sinks and no smell. I feel so stupid I can't figure this out.
We've been here since Sunday and have flushed as you suggested, had it sometimes, not others. Kind of hard to have the poor dealer find something that is there sometimes and not others.
I guess I just get to depressed about this stuff as I'd like everything to perfect for my wife. She's the one saying don't worry about it. Just baffles me because it seems like such a simple design.
Bob
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Old 09-26-2014, 10:03 AM   #8
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Try chlorine beach in the sinks and traps. Let stand for 10 minutes and dilute. May take a few asps but will stop the bugs-and odor. Works for me!


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Old 09-26-2014, 11:25 AM   #9
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Thanks Vince. Can you explain how I could get the smell with the sinks holding water and the air vents covered. Like I said, it didn't happen at all today. Tank is pretty full right now, maybe I should empty it and see what happens. Don't know if I should leave the vents covered or not. Doesn't seem to have any influence on emptying the tank.
Bob
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Old 09-26-2014, 12:20 PM   #10
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Have you noticed it worse if you have a vent fan running? We are chasing somewhat of the same thing. The issue with ours is when I have the fantastic fan in the living room running it pulls up some horrific smells!
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