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Old 05-24-2015, 12:15 PM   #1
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Forester 3011 ds black tank venting

Does anyone have any suggestions to preventing black tank fumes from coming into coach while driving? It has happened a few times with relatively low sewage levels and gets very annoying. I have a friend with a Sunseeker and they said they have a similar issue. Is there a special vent cap that can replace the stock cap to improve air flow?

Thank you in advance.
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Old 05-24-2015, 02:02 PM   #2
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Gray tank tanks can smell really bad to are you sure it is not gray you are smelling more typical


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Old 05-24-2015, 10:10 PM   #3
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The black and gray tanks have a common vent on the roof as both tank vent pipes are tied together but I don't think it would cause your issue. There are two additional vents on the gray tank system in each of the sink cabinets, kitchen and bathroom, which can malfunction causing odor to get into the coach. The vents are supposed to only let air into the system to aid in line draining but can malfunction and let air and odor from the tank into the coach. I had one do that on my toyhauler. The cause was excessive glue during construction that interfered with the operation of the rubber flapper inside it. They are usually just hand tight so you can easily remove them and check for problems.
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Old 05-24-2015, 10:15 PM   #4
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We had the same issue. We replaced the stock roof vent cap with a cyclone vent. Issue solved.
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Old 05-25-2015, 03:50 PM   #5
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Can you send the link to the cyclone vent you installed?
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Old 05-25-2015, 07:20 PM   #6
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Vent cap

Thanks much. I ve seen those and will get one. Is that correct the gray and blackbtanks vent thru the same pipe to the roof?
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Old 05-25-2015, 10:21 PM   #7
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I agree the cyclone vent will solve the issue when driving because it will pull a slight vacuum on the tanks to prevent any fumes from getting inside the coach but IMO it's just fixing the symptoms not the cause. There should not be any open path for tank fumes to get into the coach area. When sitting still open the sink cabinets and see if you can smell something. You might also put on a roof vent fan with the windows closed and see if you get the problem and can locate the source.
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Old 05-25-2015, 11:23 PM   #8
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Forester 3011 ds black tank venting

Quote:
Originally Posted by MikeRP View Post
Can you send the link to the cyclone vent you installed?

[url]http://www.amazon.com/Camco-40595
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