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Old 04-22-2014, 12:18 PM   #11
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Location: Concord, NC
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Seal the hole around the pipe with expanding foam or thin alum flashing and caulk it.

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Old 04-22-2014, 06:00 PM   #12
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Join Date: Jan 2012
Location: Where ever we are parked
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I checked the air admittance valve and it was loose. Took only 2 turns to unscrew it from the vent pipe. When I shake the valve is does "rattle" a little but it does not seem consistent. The rubber diaphram seems intact. It looks like an inexpensive part so I will buy a new one when I go to Lowes.

I just ordered a new toy; a 12 foot long usb "endiscope" waterproof camera .... I want to "see" if the vent stack is connected to the tanks.

(Unfortunately it will take China 5 weeks to get me the camera....)

After that "exploration" I will fill the holes beneath the cabinet.

Hopefully the valve replacement will end the "stink".

Thanks for all the input.

2012 Dodge 3500, SLT Big Horn,CC,DRW,Cummins HO, EB, 4x4, 3:73, Retrax Pro, Q20, TST507, Garmin RV760, Sleek 4g
2014 Cedar Creek, 36CKTS, 640w Solar, TriStar MPPT 60, Magnum 2000w, PI EMS, WiFi Ranger Elite, Sleek 4g, Wingard DTV Traveler
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