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Old 03-23-2019, 06:44 PM   #1
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Sink draining issues

I just finished dewinterizing my coach and now my sink and shower are not draining. I filled my fresh water tank and emptied the antifreeze. I then dumped both my black and gray tanks and then pumped a bleach solution into the fresh water tank. I then opened all my faucets until I smelled the bleach from each one. Now my sink and shower will not drain. Any suggestions?
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Old 03-23-2019, 06:50 PM   #2
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Look for a wasps nests in top blocking your air flow
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Old 03-23-2019, 06:56 PM   #3
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replace the air admittance valve under the sink. It is attached to the drain.
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Old 03-23-2019, 09:20 PM   #4
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A while back someone here taught us that sink and shower may not drain if your camper isnt level.
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Old 03-23-2019, 09:30 PM   #5
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Originally Posted by ddamron View Post
I just finished dewinterizing my coach and now my sink and shower are not draining. I filled my fresh water tank and emptied the antifreeze. I then dumped both my black and gray tanks and then pumped a bleach solution into the fresh water tank. I then opened all my faucets until I smelled the bleach from each one. Now my sink and shower will not drain. Any suggestions?
I would start by first checking your plumbing vent on the roof and air admittance valve under the sink.
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Old 03-23-2019, 09:42 PM   #6
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The only time I had that problem in a prior unit, I was advised to get a wire and push it through the grey valve. It worked, but you need a 5 gal bucket. MHO
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Old 03-23-2019, 09:48 PM   #7
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The only time I had that problem in a prior unit, I was advised to get a wire and push it through the grey valve. It worked, but you need a 5 gal bucket. MHO
I believe the OP said the sink and shower are not draining... didnít say waste tanks werenít draining.
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