Leaky sink pipes (photo attached)

[LargeProsecco]

I've bought a new flat which has a leak below the sink.

When I pour water down the sink, it comes out of the 2 "joins" in the pipes (circled in picture).

There doesn't seem to be a way of tightening the joins up & it's almost like the pipes are placed inside each other with nothing to seal them.

Have tried you-tubing it for ideas and was hoping I could try to fix myself rather than call a plumber out.

The kitchen is very old & the previous owners did lots of amateur DIY so expectations are low.

They look like they can be tightened. Do they not turn?

Unfortunately not

Where's @PigletJohn...

Check there is the rubber bit inside the pipe bits that join, you can also buy metal tightening parts from b and q, one for each join, so two it looks like you need. That's what I learnt from taking mine apart and putting back together after water leak.

the black pipes look to me like they came with the sink and may be some odd make. The collars will probably screw to tighten, squeezing a rubber washer against the pipe inside. A firm grip wearing rubber gloves might do it but they look like they have got ears that pipe pliers would fit. They come in different sizes, the one shown will adjust to max 40mm, is that big enough? Or you could use a Boa wrench (get two)

The right-hand horizontal pipe looks like it runs uphill. So does the convoluted hose. Water doesn't.

The vertical black pipe looks too long for a proper fit. And so is crooked. Perhaps the installer didn't have a saw. If you need to cut them a [[https://www.screwfix.com/c/tools/hacksaws/cat9790016#category=cat9790016&sort_by=price junior hacksaw will do it. Smooth off the ragged edges with sandpaper.

I would be itching to pull it all off and assemble a new set, using McAlpine parts.

You have to visualise or draw the correct layout and then build it. The only fixed points are the two plugholes, and the outgoing waste pipe, and you assemble whatever you need between them.

p.s.

ignore American youtube, their plumbing is different.

Thank you so, so much @PigletJohn - that's so helpful & explains a lot.

I think the kitchen is original from the 1970s so it wouldn't surprise me that some of the fittings/pipes/work isn't standard.

I was hoping not to have to call someone out or do an expensive patch up job but am hosting Christmas dinner and cant realistically with a leaky sink.

Thank you again