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Old 09-28-2014, 02:58 PM   #21
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Since you have exhausted all logical causes, let's get to the illogical ones (if they exist). Empty the grey water tank and close off everything you've sealed off before. Plug all drains with rubber stoppers or the like. Put a hose up and into the tank via the dump pipe or down the roof vent and put a "tracer" of some sort (e.g. perfume) into the tank. In other words, work the problem backwards. One-by-one, unplug and use each drain re-plugging as you move on. Which drain makes the trailer smell like a cheap floozy and under what conditions?
I mean ... you thought of everything else, haven't you?
Sounds like an excellent plan of attack! In addition I would let it sit, completely sealed/plugged except for vent on roof for at least half an hour and then do your sniff check.
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Old 09-28-2014, 03:18 PM   #22
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Funny you mention perfume. I had told my DW that I needed a smoke bomb to put in the tank and see where it was coming from. If the dealer can't find anything, I will try the water down the roof vent suggestion. That's about all I have left.
We have been in Petosky Mi. for the last week and just found there was a Rockwood dealer here. Should have driven that way last week and see if they could have fixed my water heater under warranty. Too late now. Leaving for Kazoo tomorrow.
Thanks to everyone for the help so far.
Bob
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Old 09-28-2014, 04:10 PM   #23
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Now you've got me thinking how to send smoke down the roof vent and see where it comes out. Sounds like a product someone should come up with.
Bob
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Old 09-28-2014, 04:34 PM   #24
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I chased a similar issue this summer...still don't know what fixed it but it's fixed....first I replaced the air admit. valve that I found barely hand tight....I installed those Cyclone vent pipe thingys on my black & galley vent pipes. I was convinced my odor was either the black or grey tanks...but came to find out it was the galley tank that had something nasty in it. I always drained grey & galley completely....that was my mistake. What I did was fill all 3 tanks about 1/2 full with water & deodorizer packets. Then off to the campground. Dumped & flushed them all when I got there. The sloshing during the trip gave the tanks a good cleaning & haven't had a problem since. All 3 tanks get a couple gallons of water with deodorizer for travel.
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Old 09-28-2014, 08:46 PM   #25
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We had the same thing happen this weekend. I checked the air admittance valve under the kitchen sink. Does anyone know if these go bad? Do these hold water in them? It was snug on the pipe. Ours occurred after we dumped hot water down the sink. Any help is appreciated. Thank you.
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Old 09-28-2014, 11:04 PM   #26
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Erik the vent functions like a roof vent. They open to allow air to enter the pipe when water is draining to the waste tank. They close to prevent gases from entering the living space. It's simply a lightweight flap valve, very cheap at the Depot or Lowes. Hot water didn't harm it, if water reaches it you got bigger problems!


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Old 09-29-2014, 07:20 AM   #27
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Thank you. I will replace it and hope it helps.
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Old 09-29-2014, 07:49 AM   #28
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Gooiebob do you smell the odor when not connected to campground sewer hookups? Not long ago, a camper told me they ran into a situation at a campground where they noticed a really bad sewer odor emitting back into their grey water tank and up into the camper. After thorough search for the odor, they eventually learned it was emitting from the campground sewer lines, which was confirmed when they disconnected from the hookup.
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Old 09-29-2014, 08:14 AM   #29
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Gooiebob do you smell the odor when not connected to campground sewer hookups? Not long ago, a camper told me they ran into a situation at a campground where they noticed a really bad sewer odor emitting back into their grey water tank and up into the camper. After thorough search for the odor, they eventually learned it was emitting from the campground sewer lines, which was confirmed when they disconnected from the hookup.
A good reason to always keep all the dump valves closed when hooked to a campground sewer. If you don't, you are venting the entire campground sewer system thru your vents. Also, most campgrounds require donuts or screw in sewer connections.
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Old 09-29-2014, 08:22 AM   #30
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Gooiebob do you smell the odor when not connected to campground sewer hookups? Not long ago, a camper told me they ran into a situation at a campground where they noticed a really bad sewer odor emitting back into their grey water tank and up into the camper. After thorough search for the odor, they eventually learned it was emitting from the campground sewer lines, which was confirmed when they disconnected from the hookup.
They must have been hooked up with their (Dump Valves) Open for this to happen. Normal SOP is Only open when Dumping. Youroo!!
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