I'm perplexed! I either have a gage stuck on 3/4 full or I've got build up that won't drain. We don't leave the gate valve open for draining while camping as I know that's a big no-no. We only open to drain. I've filed it up with water and drained. Drove around with Half full to slosh around. I've flushed it with the fresh water inlet, but continues to read half or 3/4 full. Puzzled! Any suggestion besides crawling in with a flashlight? LOL!

Yep, my #1 suggestion is to.... stop worrying about the sensor. When the toilet burps its time to dump. Sure, you can clean the sensors, get yourself filthy.. and all for what? The next time a piece of toilet paper decides to stick to the 3/4 full sensor guess what your sensor will read? Burp = dumpThanks!Jeremiah

Chances are it's empty, The gages are really sensors and get gunked up and give false reading. Some people worry about it and some people don't Myself I never even look at the gage.

Fill it to top with water. Drain it and listen how much comes out. If it flows a lot , it's probably the gage. Mine aren't very accurate. I pretty much know when to dump.

Pour 30-40 oz of Dawn Dish Soap thru the toilet with the holding tank about half full and drive that way to your next camp site. 200 plus miles of shake, rattle, and roll will scrub the scum off the sides of the tanks and everything should be back to normal.Get in the habit of doing this occasionally to prevent the scum from building on the tank walls.LeRoy

Buy yourself a clear sewer adapter.Connect it to drain line and then connect sewer hose.You can then see how well and what drains from tanks.They come angled and straightSensors are notoriously faulty.

Stuck black water gage, or really full? | Good Sam Community

Homeless_by_Cho
Explorer
May 11, 2014
Pour 30-40 oz of Dawn Dish Soap thru the toilet with the holding tank about half full and drive that way to your next camp site. 200 plus miles of shake, rattle, and roll will scrub the scum off the sides of the tanks and everything should be back to normal.

Get in the habit of doing this occasionally to prevent the scum from building on the tank walls.

LeRoy
TOMMY47
Explorer
May 11, 2014
Fill it to top with water. Drain it and listen how much comes out. If it flows a lot , it's probably the gage. Mine aren't very accurate. I pretty much know when to dump.
nelson
Explorer
May 11, 2014
Chances are it's empty, The gages are really sensors and get gunked up and give false reading. Some people worry about it and some people don't Myself I never even look at the gage.
jerem0621
Explorer II
May 11, 2014
Yep, my #1 suggestion is to.... stop worrying about the sensor. When the toilet burps its time to dump.

Sure, you can clean the sensors, get yourself filthy.. and all for what? The next time a piece of toilet paper decides to stick to the 3/4 full sensor guess what your sensor will read?

Burp = dump

Thanks!

Jeremiah

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Stuck black water gage, or really full?

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