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Old 09-13-2019, 08:27 AM   #1
jdshep
 
Join Date: Aug 2018
Location: Seneca, SC
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Chaparral 381RD Sewage smell

Hello everyone. We have a 2018 381RD. Just got home from a week trip to a county park. Didn't have full hook ups (but I don't think that would've mattered). Noticed a sometimes strong sewage smell coming up from under the bathroom sink cabinet. Never even had the black tank 1/2 full. When we noticed the smell, I did empty the tank and put a new bottle of blue treatment in. Smell seemed to get a little better, but was still there the whole trip. Any ideas where it would be coming from, or why? Not coming from the toilet...

Thank you in advance!!

Jason
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Old 09-13-2019, 09:35 AM   #2
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Sound like your Air Admittance Valve stuck open.

It's usually very easy to replace. Just twist off the old one and twist on a new one.
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Old 09-14-2019, 09:02 AM   #3
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Quote:
Originally Posted by ependydad View Post
Sound like your Air Admittance Valve stuck open.

It's usually very easy to replace. Just twist off the old one and twist on a new one.
Thanks for the tip.. That looks easy, but are you talking about a valve on the sink drain? We are smelling sewer. The sink goes to the gray water tank. Would that be producing the same kind of smell?

Thanks again.
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Old 09-14-2019, 09:30 AM   #4
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You may find that the smell for a gray tank is worse then from the black, check or replace the under sink valve and see if that stops the smell.
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Old 09-14-2019, 10:35 AM   #5
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Quote:
Originally Posted by ependydad View Post
Sound like your Air Admittance Valve stuck open.

It's usually very easy to replace. Just twist off the old one and twist on a new one.


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Old 09-14-2019, 12:50 PM   #6
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You can test the AAV by covering it with a plastic bag and taping it tightly to seal it.
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Old 09-14-2019, 06:54 PM   #7
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You may find that the smell for a gray tank is worse then from the black, check or replace the under sink valve and see if that stops the smell.
Had the same thought. Smell from a gray tank can be bad
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Old 09-26-2019, 09:14 PM   #8
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I couldnít not find the correct size / type AAV anywhere. I contacted the parts dept. at FR and I was able to order the part. Cost $1. Yep thatís what I thought too, but yes $1 plus shipping cost of $4. I ordered 2.
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