Kitchen sink keeps coming up

[Johnny Rico]

I've lived in this townhouse since 2018. A couple years ago the insinkerator would back up into the left sink when used. It wasn't that bad, so I figured I would replace it in the future. I rarely use the insinkerator and I have traps over the drains so food doesn't go down. It has gotten pretty bad now so I decided to change the insinkerator. Taking all the pipes apart I find the p trap and main drain pipe are horribly disgusting and filled with sludge. I got an auger and got everything out of the p-trap and everything I could out of the main drain pipe to the sewer. Now when I run water in the insinkerator on the right sink, it still comes up to the left and leaks at the white slip nut. Can anyone help?

pic for reference, I did not tighten slipnuts, as I am considering changing the pipes to new ones.

 

[Twowaxhack]

The drain is still partially clogged.

Replace the slip joint washer in that leaking joint and tighten.

 

[Johnny Rico]

The drain is still partially clogged.

Replace the slip joint washer in that leaking joint and tighten.

I plan to get new pipes and washers as they are cheap and these are old anyway. How would I Clean the drain? Auger more or get a jetter? Could I use a pressure washer?

 

[Twowaxhack]

I use a good cable to clean the drain. I’d take the PTraP off to do this.

How far is the main from the pipe I see there under the cabinet ? What kind of fittings are beyond what I can see…….? It’s ok if you don’t know. I’d rather you not speculate.

 

[RickFlorida]

Wow, is that a solid bronze p trap? Impressive, I didn't know they even made those. I know commercial grade bronze pipe fittings exist, but this appears to be the residential supply company NIBCO that makes the smaller copper pipe stuff. I always struggle to get plastic/PVC p traps to not leak so I may have to start using these!

 

[Johnny Rico]

I use a good cable to clean the drain. I’d take the PTraP off to do this.

How far is the main from the pipe I see there under the cabinet ? What kind of fittings are beyond what I can see…….? It’s ok if you don’t know. I’d rather you not speculate.

I'm not sure and I don't want to guess.

 

[Johnny Rico]

Wow, is that a solid bronze p trap? Impressive, I didn't know they even made those. I know commercial grade bronze pipe fittings exist, but this appears to be the residential supply company NIBCO that makes the smaller copper pipe stuff. I always struggle to get plastic/PVC p traps to not leak so I may have to start using these!

Not sure if this ptrap is helping or hurting me. I'm having issues with the draining and leaks. I haven't figured it all out yet but I'm going to try and change the pipes, ptrap, slip joint nut and washers and see where I get. Probably after I clean the main drain pipe first or get a company to do that.

 

[TomFOhio]

Get the drain from where it goes into the wall to where it ties into the main drain cleaned out.. Then change the piping under
the sink if you want.