Pressure soil pipe with water to unblock?

[Dave777]

My soil pipe on the downstairs toilet seems to be partially blocked. Now I know it can be rodded but I was thinking of another way.

With the toilet removed and exposing the soil pipe I was thinking of making a reducer to fit over the 4 inch pipe down to a garden hose pipe size and then turn the hose pipe tap on to put a bit of pressure down the soil pipe with water.

Does anyone think it would work or could the water come out somewhere else like up through the sink waste etc?

 

[Jimbo]

Just get it jetted from the other end. A garden hose will be just a trickle in a 4” pipe after a few feet. And if it’s actually blocked the fittings are not designed for positive pressure and will blow apart. And not to mention connecting fresh water to a drain.

 

[HarryL1234]

If you're going to do it, then at least film it. This has Some Mothers Do 'Ave 'Em written all over it.

 

[adgjl]

It may not be just water that comes up through the sink waste, it could be “stuff” as well, which will give you a major cleanup job as well.