I have a 2017 Minnie Winnie and am having trouble with my black tank draining. I dont know if the issue is the gate valve outside that is stuck or what. I let it sit until; next stop about 150 miles. I thought whatever is stuck would work its way out. Before we left i put some chemicals down to include Happy Camper but still no go. I am thinking the gate valve is broken closed? If not I'll have to work my way from the valve to the tank. Any opinions? I am open to any ideas/as always thanks!

Open the toilet and look inside. Is there any water? Add water and drive around, to mix it all up real good. If that doesn't work, it's gonna get real messy. Run something semi flexible up the waste connection. Better have a few huge buckets on hand, or be right next to a cleanout.

What are you basing the issue on: - If it's the pretty lights on the monitor, they always show up as full even after you drained. - Do you hear anything when you open the valve?

Tank FlushYou can buy an adapter like this and hook up a hose. It water goes into the tank you are OK. If the water just flushes back out the valve is broken and stuck closed.

LouLawrence wrote:Tank FlushYou can buy an adapter like this and hook up a hose. It water goes into the tank you are OK. If the water just flushes back out the valve is broken and stuck closed.Get the model with the gate valve.

Go to Walmart and buy the reverse flush thing. It works good. If that doesn't work...oh dear...

black tank wont drain | Good Sam Community

15 Replies

falconbrother
Explorer II
Aug 23, 2021
Go to Walmart and buy the reverse flush thing. It works good. If that doesn't work...oh dear...
richclover
Explorer
Aug 23, 2021
LouLawrence wrote:
Tank Flush

You can buy an adapter like this and hook up a hose. It water goes into the tank you are OK. If the water just flushes back out the valve is broken and stuck closed.

Get the model with the gate valve.
LouLawrence
Explorer II
Aug 23, 2021
Tank Flush

You can buy an adapter like this and hook up a hose. It water goes into the tank you are OK. If the water just flushes back out the valve is broken and stuck closed.
valhalla360
Navigator
Aug 23, 2021
What are you basing the issue on:
- If it's the pretty lights on the monitor, they always show up as full even after you drained.
- Do you hear anything when you open the valve?
jdc1
Explorer II
Aug 22, 2021
Open the toilet and look inside. Is there any water? Add water and drive around, to mix it all up real good. If that doesn't work, it's gonna get real messy. Run something semi flexible up the waste connection. Better have a few huge buckets on hand, or be right next to a cleanout.

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black tank wont drain

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