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Old 08-07-2010, 10:39 AM   #1
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PhiDor's Avatar
2007 34' Classic S/O
The Villages , Florida
Join Date: Dec 2005
Posts: 119
Black tank flush

The black tank flush on my 94 Excella is not working. Any thoughts on how to get it working? Could it be the vacuum breaker or check valve needs replacing?

Phil & Doris Drugge
[COLOR="Red"]WBCCI #4941

"Jerry and our Amazing Dream Stream"
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Old 09-15-2010, 10:10 PM   #2
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2008 30' Classic
Montrose , Colorado
Join Date: May 2007
Posts: 32
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Did you ever figure this out? We are purchasing a 1994 30' Limited with the same problem.

-Virgil and Sheila

It is not down in any map; true places never are. ~Herman Melville
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Old 09-15-2010, 10:47 PM   #3
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2007 25' Safari FB SE
Eureka Springs , Arkansas
Join Date: Oct 2009
Posts: 177
Mine is not working either.
Acts like a valve is closed, no water gets thru system.
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Old 09-15-2010, 11:32 PM   #4
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2007 23' Safari SE
San Diego , California
Join Date: Apr 2006
Posts: 1,430
Whenever I see a thread about black tank flush problems, I think back to the thread, "Black Tank Flush" started by JmesDean in 2006.

When he attached the water hose and turned on the water, he heard a "pop". He thought something popped off and reduced his water pressure. One possibility is that if you attach a hose and turn on the water with too high pressure you might damage the check valve or something else in this "No-fuss flushing system".

So whenever I attach a water hose to my black tank flushing system, I feel the hose as I gradually increase the water pressure to the point where I can see that it is adequately flushing the tank without blasting out the system.
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Old 09-17-2010, 08:58 AM   #5
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2007 34' Classic S/O
The Villages , Florida
Join Date: Dec 2005
Posts: 119
Smile Need more info

It seems like many of us have this problem. Now if we could figure out how to fix it.....
Phil & Doris Drugge
[COLOR="Red"]WBCCI #4941

"Jerry and our Amazing Dream Stream"
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