1987 Moho black water leaking

[realpank]

My black water has started to leak out of my outlet pipe. It's just a steady drip but adds up after a number of days to a stinky spot.
Is there a way to trouble shoot this? I'm hoping that the valve may just have some debris in it and is not closing all the way.
Advice on how to check this? What to look for? How to fix?

Thanks in advance for your replies,
Chris

[tevake]

One approach to a quick fix for debris in the valve is to open and close it rapidly.

Once you have drained and rinsed the tank a few times. You continue rinsing by closing the valve build up the clean water level in the tank. Then once you open the valve and the water is flowing, try to close and reopen the valve rapidly.

This action with the clean water flushing thru the valve can remove the offending debris.

Hopefully this will work for you. I'll leave it to others to describe the next steps if that fails.

Cheers Richard

[realpank]

Thanks Richard,
Will give a shot after the thaw