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Old 05-27-2017, 11:25 AM   #1
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Grey tank odor

I started noticing nasty odor from kitchen sink and bathroom sink. I replaced the bent on both sink still smell the odor. I also notice the kitchen sink started burping when I run the water.
Here is little background, the coach has been in between service center and storage for last 3 months, just replaced the dump valve seals, if any of that matters.
Next I plan on doing is to dump some bleach (not a lot maybe a cup) in both sink. We getting ready to get on the road in a week for couple of months or so. Hopping to getting problem solved before
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Old 05-27-2017, 11:31 AM   #2
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use some dawn dishwashing soap and also use a product called "Campers sink deodrant" Please treat grey tank just like black, use a chemical of your choice everytime you start up and breakdown. Just keep working at it and you will get rid of odor.
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Old 05-27-2017, 11:44 AM   #3
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Occasionally our grey tank would "sour". I would add a little black tank chemical to it and the smell would go away. If the odor is coming from the sink it may just be the traps. Try pouring a little down each of them.

I don't know about the burping, it sounds to me like something isn't venting the way it is supposed to and air is being forced back up through the sink drains when it is displaced in the tank by liquid.

Best of luck, I hope you have a pleasant trip.

Steve
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Old 05-27-2017, 02:37 PM   #4
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Maybe a clog in pipe north of final drain on line and preventing the vent. I've recently done the vinegar and baking soda and hot water through all my drains and the are running with less noise now. On another not, your gonna have some Oder from gray tank, in our rig I have to run water in a bathroom sink once a week. We hardly ever use it and the ptrap gets an air gap. I use liquid fragrance laundry soap and a liquid water softener for my tanks.
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Old 05-27-2017, 02:49 PM   #5
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Maybe bad air admittance valves?
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Old 05-27-2017, 03:44 PM   #6
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Just replaced both airadittance vents on kitchen and bathroom sinks
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Old 05-27-2017, 04:25 PM   #7
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Keep your gray tank smelling nice by using "Happy Camper" in it. I use it in both tanks and it really works. Do a search in here and you'll see how many of us use it.
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Old 05-27-2017, 08:18 PM   #8
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We try to dump both black and gray tanks before we travel. If we do travel with grey water in tank we put sink drain covers over all drains and no smell.
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Old 05-28-2017, 04:53 PM   #9
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Quote:
Originally Posted by tom chelbana View Post
We try to dump both black and gray tanks before we travel. If we do travel with grey water in tank we put sink drain covers over all drains and no smell.
Sometimes it's the simple things. I never would have even thought to do that if I needed to..
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Old 06-10-2017, 08:26 PM   #10
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Finally discovered the source of nasty smell. It was the fresh water tank. Last time filled the tank was at local gas station, normally I fill the tank at home. As I was ready to get ready for our next trip decided to empty the tank to back fill with fresh water. That's when I smelled the nasty odor as I walking around the coach. A sanitizing with bleach problem resolved. Lesson learned for next time need to fill the tank. Thanks everyone for their inputs
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Old 06-10-2017, 08:43 PM   #11
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Quote:
Originally Posted by TonyDi View Post
Keep your gray tank smelling nice by using "Happy Camper" in it. I use it in both tanks and it really works. Do a search in here and you'll see how many of us use it.
We do this also.




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