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Old 09-26-2014, 12:22 PM   #11
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Do you get more often the less full the tanks are? If so, that contributes to the idea it's something in the tank. As the tank fills up, the water level covers whatever it is that's rotting and masks the smell.



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Old 09-27-2014, 12:47 PM   #12
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Doesn't seem to matter if the tank is empty of partly full. Its hard to tell because the gauges say the tank is 1/3 full all the time.
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Old 09-27-2014, 11:22 PM   #13
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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
Sorry for delayed response. Both of my experiences was cause by crud trapped in the drain piping above the trap and tanks. I think you have pretty well rule out the opening from the tank to the living space. My problems were caused by hair and grey paste stuck on ledges and even the skin of the piping right up to and through the 180 deg traps. Normally it just stuck paste but if bacteria begin to grow it begins to give off odor. I treat with bleach and its gone for awhile. The 2nd kitchen sink often unused is the biggest offender. If nothing else works take the drain apart and clean the piping inside.
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Old 09-28-2014, 09:48 AM   #14
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No problem with the response time Vince. I've got until I die to work on this. Or the dealer does on Wed. Took a shower this morning with the vents covered and no smell. That makes it even harder to figure now. Kind of thinking the pipe isn't all the way in the tank and if theres much water in there its coming thru the floor.
Thanks for everyone's suggestions.
Bob
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Old 09-28-2014, 10:12 AM   #15
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No problem with the response time Vince. I've got until I die to work on this. Or the dealer does on Wed. Took a shower this morning with the vents covered and no smell. That makes it even harder to figure now. Kind of thinking the pipe isn't all the way in the tank and if theres much water in there its coming thru the floor.
Thanks for everyone's suggestions.
Bob
Since you have been up on the roof to cover your Gray water vent,you can remove the Cap and measure to find out if the vent pipe is (In the tank). Most likely it is or liquid would be leaking out the Belly. You can also fill your (Gray tank) until water starts to come up the shower drain for leak checks there. Youroo!!
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Old 09-28-2014, 10:30 AM   #16
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Sorry Youroo, I should have explained it better about the vents. I've covered the air admittance valves with saran wrap, not the roof vent. We did have a complete fill once into the shower, my fault, but I never noticed anything on the ground. I would have to remove the underbelly to see if any water has set in there. I noticed the over flow right away and emptied. This was a couple of trips ago.
I have measured before when it happened and their is about five inches difference from the bottom of the tank to the top. Seems right to me but that wouldn't tell me if its sealed well.
Thanks
Bob
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Old 09-28-2014, 10:50 AM   #17
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Have you tried removing the traps under the sinks and clean them out? It's possible something like sludge is built up or something else that is emitting the foul smell is in the traps
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Old 09-28-2014, 10:52 AM   #18
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I had this happen once while showering, actually last night in Goshen. The culprit was never found but i summarize it was the air admittance valve under the bathroom sink. The smell was the same as the grey tank water smell when i dumped it.
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Old 09-28-2014, 11:03 AM   #19
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Thanks Chris and B. I've filled the sinks to block the drains and still had it. If I find the problem I'll let everyone know. The traps had water this.morning. only thing different was the air valves closed off.
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Old 09-28-2014, 11:24 AM   #20
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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?
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