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Old 09-30-2014, 08:26 PM   #15
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I'm betting you have an obstruction on one of the sewer vents on the roof. Go up the ladder on your roof and see if you have a clogged or damaged sewer vent.

1979 Dodge Tioga Class C 24 foot. 1987 Fleetwood Bounder 34 Foot.

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Old 10-01-2014, 08:28 AM   #16
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my 2015 toy hauler had a very strong sewer smell from the first time I flushed the toilet. I assumed it was part of the shakedown so I didn't really worry about it, however after a month the smell was still there. After researching on IRV2.com I decided to check the air admittance valve underneath the bathroom sink. The valve was fouled with rubber or plastic filings on the membrane and on the threads. I cleaned all the shavings out and reinstalled the valve. Lo and behold no more bad smell when the toilet is flushed. Check your air valve and see that it is still working correctly.
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Old 10-03-2014, 04:18 PM   #17
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As far as the open gray water tank valve into the dump at the campground, I have found that if I "make" a p-trap by going over a rock or piece of wood prevents odors from coming up from the sewer through my slinky. Works every time.

OP has not commented on when / where smell is presenting itself. That would be helpful to solve his issue.

Traveling whenever possible with DW, 3 kids and "Tate" the mut dog. 1999 Minnie Winnie 3F430V
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smell, water

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