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Old 11-27-2014, 05:48 PM   #1
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Sewer gas smell

We periodically have a sewer gas smell. Any suggestions as to how to eliminate? We did empty the tank.
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Old 11-27-2014, 05:52 PM   #2
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Welcome, Clean and sanitize.
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Old 11-27-2014, 06:26 PM   #3
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Also, make sure you keep some water in the bottom of the bowl at all times. Next, sometimes the vent pipe gets clogged (wasp nests are notorious for this) or some connection/seam in the pipe loosens/breaks allowing sewer gasses to enter the trailer.

Good luck.
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Old 11-27-2014, 06:28 PM   #4
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A friend of mine installed a fantastic fan in the bathroom, after removing the small fan..I told him to crack a window when using the bathroom fan, and all smells went away..
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Old 11-27-2014, 06:33 PM   #5
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Quote:
Originally Posted by katiemaggie View Post
We periodically have a sewer gas smell. Any suggestions as to how to eliminate? We did empty the tank.
Check the sewer vent pipe cover gaskets.

They only last 2 to 3 years.

Andy
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Old 11-28-2014, 07:31 AM   #6
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And please check for propane leaks. Turn off your propane at the bottles. Open some windows. Then close them back up and check for smells again after a few hours. Propane is heavier than air, so the smell might be worse close to the floor. Some folks have mistaken propane leaks for sewer gas. Neither smell all that great.

I don't store black or gray water in my tanks. Your waste water tanks ought to be empty unless you are traveling. Empty your tanks if you can. Make sure you have liquid in all the traps, sinks, shower, toilet. And yes, get a ladder and make sure your vent pipes are not clogged.

Do these things systematically one at a time so you can better determine what action made the smell go away. Then you'll know what to do to fix it.

David
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Old 11-28-2014, 07:35 AM   #7
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Another possible source is your P-traps. It's hard to keep them full when you're traveling down the road; water can slosh out of them. And an empty p-trap can allow gray tank odors to escape. Yes, your gray tank can smell as well as can the black tank. It's not a bad idea to use the drain stoppers on your sinks and shower pan while en route, to block odors from escaping if your p-traps empty themselves.
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Old 11-28-2014, 08:17 AM   #8
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If there is any residue in the black tank you will get some odor if you are not dropping some deodorant chemicals in and especially if you have a vent open.
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Old 11-28-2014, 08:54 AM   #9
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Check your batteries, a bad battery will produce a smell that smells like sewer.
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Old 11-28-2014, 10:26 AM   #10
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If you have a sewer smell, rubber stoppers in the shower drain solved mine.
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Old 11-28-2014, 06:55 PM   #11
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From on earlier post on a similar topic:

In addition to having the plumbing systems in excellent operating condition, the correct application of negative air to the Airstream will help prevent unpleasant odours from occupying the air space. When the toilet flap is open, ensure that exhaust fans, including Fantastic type cabin vent fans, are not exhausting air. Put them on when the flap is closed. You do not want to extract air from the holding tank into the interior of the Airstream. I also have installed a Cyclone RV Pluming Vent that provides a superior vacuum to the holding tank, ensuring that with a minimum of air movement on the outside of the Airstream, there is negative air supplied to the holding tank. The goal is to provide a path for the gases to exit through the tank vent, not the interior of the Airstream. I also use a bacteria based holding tank solution that works without negative consequences to the environment.

Works for me. Jim




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Old 11-30-2014, 12:09 PM   #12
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There's some great advice here! Keeping your black and grey tanks clean (not just emptied) is key to odor control -- it's the gunk that builds up in the tanks and that can't be removed by emptying that is almost always the cause of persistent odors. There are some professional tank cleaning services out there. Message me and I can provide some references.
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Old 11-30-2014, 01:26 PM   #13
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I agree with Jim Flower. Toilet drain/flap open, any movement of air, bad combination. sucks the sewer gas into the cabin. Try to have enough liquid in the bowl, not to allow direct opening to the tank. Quick rapid flush after adding water to the bowl helps.
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Old 12-02-2014, 03:06 PM   #14
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Quote:
Originally Posted by Inland RV Center, In View Post
Check the sewer vent pipe cover gaskets.

They only last 2 to 3 years.

Andy
Went to the dealer in BC and they say they have never heard of them????
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