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Old 08-07-2012, 10:30 PM   #11
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Join Date: Mar 2008
Location: Southwest Missouri
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Just a suggestion that doesn't cost much and is easy to install. I had the same black tank smell problem after several camping weekends of our 1st year owning our TT. I installed a Cyclone RV holding tank vent. No more smell... I was so impressed I installed 1 on the gray tank vent(had a bad smell coming from the drain one trip). Now after almost 4 years, no problems even in this 100 degree heat.
Also I have read where another person like you that had a smell problem replaced his toilet and that took care of it. That guy had brought his trailer back to his dealer several times and they couldn't find anything definative. He was at his wits end too. Good Luck.

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Old 08-08-2012, 07:42 AM   #12
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Had same thing once, cleaned the area between the tank and the stool with a stiff brush, builds up in that area sometimes.

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Old 08-08-2012, 05:05 PM   #13
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I'm pretty sure I'm going to be trying all of these idea. I didn't even think of cleaning the area between the tank and toilet

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Old 08-08-2012, 10:59 PM   #14
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I had a odor problem on my Sierra and had a hard time figuring it out. It turned out that the vent pipe was too close to the vent cover so i cut the vent pipe back
some and seems to be working fine now

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