Black water Grey Water Tanks

[HATCHET19]

OK, I own a 2004 Georgetown 326DS. This is our 5th year camping in it. No problems of any kind until this last trip. We were only out for 4 days. When we got home, I noticed the Black Tank gauge was registering full but the Grey Tank was registering empty. It's usually the other way around. So I went to drain and flush the holding tanks and very little water drained from the Grey Tank. So....after draining both tanks, I took the water hose in side and ran several gallons of water into the Black Tank through the toilet, then drained the Black Tank. Then took the hose to the kitchen sink and ran several gallons of water into the Grey Tank. When I went to dump the Grey Tank, no water came out. So I pulled the Blank Tank valve and several gallons of water came out. I went through this process 2 more times, just to be sure. Seems all my waste water is going to the Black Tank only. I don't expect anyone to troubleshoot this through the Forum. Just trying to figure out how this could be happening. If you've seen this before, I would appreciate hearing what caused the problem. Sorry for the long post. Just trying to explain the problem fully. Thanks!!!

hatchet

[HangDiver]

Did the grey tank fill on prior camping trips?

[HATCHET19]

Yes it did HangDiver. We have made many trips in this Motorhome over the past 5 years. Everything has worked perfect in the past.

[gkochel]

I don't think it's possible for water in the sink to go into the black water tank. My thinking is your grey valve is not closing all the way and water comes right out. If you have one of those clear elbows at your outlet you could test by putting water down the sink like you did while someone watches outside for water going thru the elbow when you do that with the grey valve shut. Not sure I understand the 2nd draining of the black tank producing more water without filling again however when draining any tank I know that some waste still lives in the drain pipes and does not always flow out completely. Anyway would be interested in what happens if you test my theory.

[HATCHET19]

Thanks gkochel. I'm going to revisit this problem in the morning.

[gkochel]

Originally Posted by HATCHET19

Thanks gkochel. I'm going to revisit this problem in the morning.

Was wondering how this turned out?