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Old 09-23-2018, 05:35 PM   #1
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Black tank dumping in a 2017 Thor compass

The black tank does not completely empty.
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Old 09-23-2018, 05:53 PM   #2
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Is this based on what your tank sensors show?
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Old 09-24-2018, 01:26 AM   #3
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Black tank dumping

No, I have unhooked when it was done and still some comes out. It also happens on gray tank dumping.
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Old 09-24-2018, 02:35 AM   #4
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Do you have a flush hose connection on your black tank. If not, add one, then it is not as critical to completely empty, since you can flush until clean. I had that added to the Gemini, when I bought it. The grey tank on every motorhome I have had, has been very slow to drain, for some reason. I just give it that extra time to drain and don't really worry about it.
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Old 09-24-2018, 12:43 PM   #5
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Thanks will look into it.
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Old 09-24-2018, 12:55 PM   #6
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If you are hooked to city water and once you have emptied black tank, you can shut outside valve off and run more water into the black tank following with another flush from the valves. This helps clean it up a little but also dilutes what little bit of "muddy water" is always left behind. Always make sure the valves are closed before unhooking hose...JIC.
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Old 09-24-2018, 12:59 PM   #7
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Quote:
Originally Posted by Hubbajr2 View Post
No, I have unhooked when it was done and still some comes out. It also happens on gray tank dumping.
Wait longer or rock the RV. Close the valves before unhooking. Black first, then gray to flush.
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