Community Forums

gthunts · 02-16-2014, 08:19 PM

Our third weekend trip in our 2008 MH and the grey water will not dump. We have been very careful not to put bad stuff in the drain ( grease etc) but I think maybe the previous owner was not so careful and now our use of the system three times has broken loose some bad stuff that was left before we purchased. We are sitting in CG with a full tank. Any suggestions? The little bit of stuff that has come out looks almost like paper towel??? Any solutions would be appreciated.

KIX · 02-16-2014, 08:31 PM

Grey tank is not nearly the problem as is the black tank.
At an RV store you can buy a cap for the 3" bayonet outlet with a orovision to connect a water hose to the cap. INstall it in place of the 3" drain hose. Use water hose pressure to "back feed" gray tank. Shut the valve, remove the cap (you'll lose some gray water), reinstall the 3" drain hose and hopefully the tank will then drain.

gthunts · 02-16-2014, 08:46 PM

Thanks KIX. I have a cap like you described. I will try it tomorrow

bailiff · 02-16-2014, 09:35 PM

Is gray water actually full or are your gauges showing full? Is water backing up in the shower? Some gauges lie big time.

DAN L · 02-17-2014, 03:38 AM

Quote:

Originally Posted by gthunts

Thanks KIX. I have a cap like you described. I will try it tomorrow

I use this adapter fixture and leave it installed all the time.

it is available at some walmarts too.

RV Hydro Flush - Product - Camping World

gthunts · 02-17-2014, 07:40 AM

Water backed up in shower. Going to try back wash shortly

bailiff · 02-17-2014, 06:21 PM

Hasn't happened to me but I have read on several other forums. Supposedly, some manufactures, install the tanks then cut the potty holes in the floor and tank and drop the cutout into the tank. If the backwash doesn't work, try to snake the hose up the drain line into the tank.

ralphie · 02-17-2014, 09:59 PM

Is this rig new to you? Is it possible you have another valve handle to pull that you haven't found yet?

gthunts · 02-18-2014, 10:47 AM

Backwash worked. Thanks everyone for the help

B D HOWie · 02-20-2014, 06:25 PM

Quote:

Originally Posted by bailiff

Hasn't happened to me but I have read on several other forums. Supposedly, some manufactures, install the tanks then cut the potty holes in the floor and tank and drop the cutout into the tank. If the backwash doesn't work, try to snake the hose up the drain line into the tank.

We had a flat plastic disk block our grey tank 1 1/2" blade valve. Was frustrated for a couple months with extremely slow and incomplete emptying of grey tank. That 1/8" hole in the center of the disk was all that let water through. Found the disk when I had to replace the blade valve when tire debris in the road broke the T handle. All is good now.

tazsport · 05-26-2014, 01:05 AM

Did you ever figure out what was actually stopping the gray water from draining ? I know the backwash worked for you, but what caused the stoppage ? I'm the original owner of my 2006 Itasca Sunrise and have never had a problem with my gray water draining, until today when I attempted to drain my tanks. Black water drained just fine, however the gray water is draining very slowly as if there is a blockage.

336muffin · 05-26-2014, 01:34 AM

We had the same problem on a previously owned coach. We filled the sinks with hot water and with the grey tank empty and valve open, let the hot water purge the tank. I was shocked as to what came out! Did this several times to clean the tank. It was obvious the previous owner left the grey valve open while camping and "never had a problem".

mohamer · 05-26-2014, 02:20 AM

We must have pictures!!!!

DSheets · 05-26-2014, 06:40 AM

my gray tank plugged up last fall after driving from Illinois to Fl. I always cleaned and put in the odor stuff. what cause the tank to plug up looked like sand. I finally got it unplugged with a coat hanger but made a mess with a full tank. The only thing I can think that caused it was the bottle of Dove Dish washing soap that I put in before leaving home to clean the tank and the material came off of the walls.