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Old 09-01-2013, 11:29 AM   #1
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Gurgling plumbing

I used to get a warning when the grey tank was approaching full by hearing gurgling when water runs down the sink. I hear more gurgling now at less than full. Should I degrease the pipes? How would I do that? Just dump boiling water from a kettle into the sink/shower perhaps?

2008 Fleetwood Southwind
W22 Workhorse Chassis 8.1L Chev Vortec
Allison 1000 transmission
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Old 09-01-2013, 02:41 PM   #2
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Sounds like it might be a clogged vent pipe to me. I'd start troubleshooting on the roof.

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Old 09-01-2013, 06:49 PM   #3
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Originally Posted by Ramblin View Post
Sounds like it might be a clogged vent pipe to me. I'd start troubleshooting on the roof.

That was my first thought when I read the thread starter. I'm a licensed plumber & electrician.
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Old 09-02-2013, 02:41 PM   #4
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If your coach uses air admittance valves, check those. These will be under the sink and will run vertically. They are used in place of direct connections to a vent stack.
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