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Discussion Starter · #1 ·
I've attached a picture, we installed the new sink as part of a kitchen reno, new cupboards mostly. It drained fine but occasionally when i ran the garburator water and bits of food would blow up the second sink.

last night the sinks stopped draining altogether, i pulled off the whole bottom part from the garuburator, sink and cross pipe at the flexible connector and nothing was plugged, i blew into the cross pipe and it didn't seem blocked.

Any thoughts on what this could be? I'm assuming that the water is not draining into the stack which is about 9 inches to the right of was you can see in this picture. this is the only thing that goes into the stack so i can test it at another sink etc...

any thoughts?
 

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If it is not blocked under the sink, the block must be after the sink piping and in the downstream section of the drain line. Have you snaked this line? Is the drain line vented properly?
 

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take the no hub band off right where it goes in the cabinet wall. get a water hose and an old towel. get a bucket or something to hold water and put under what you are about to do. put the hose a few inches in the drain. wrap the towel in the space between hose and drain to form as good of a seal as you can. get the wife or a friend to turn the water on for five seconds and then turn it off. it will either blow out the problem or back up in the vent stack where the bucket will come in handy when you remove your towel. if it fixes it, good. if the water blows back on you and in the bucket at least you now know where your problem is. thanks, budro

i'm smarter than i look
 

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Discussion Starter · #4 ·
well i did some more testing last night, it is a problem downstream of the stuff in the picture, i found an access cleanout thing in the basement directly below this sink, snaked it 25 feet, (was a plug at about a foot and a half)... and it still didn't clear,

i think the pipes in the basement are in bad shape, seemed like there was crud all along, i think i need to hire someone to look at it
 

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At least you know your work was fine.
I wouldn't go that far. It may not be the problem now (this time), but the excessive pitch makes any vent pipe downstream useless, and Fernco couplings are not a good choice in any long term installation that could've just as easily been glued.
 

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A P-trap for each sink is required in my area----

Also dish washer line is not allowed to drain into garbage disposal here--

Local codes vary--you are probably fine---Mike---
 

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well i did some more testing last night, it is a problem downstream of the stuff in the picture, i found an access cleanout thing in the basement directly below this sink, snaked it 25 feet, (was a plug at about a foot and a half)... and it still didn't clear,

i think the pipes in the basement are in bad shape, seemed like there was crud all along, i think i need to hire someone to look at it
Before paying somebody $125 per hour to auger your drains, go buy one of these drain cleaning bladders. I've got 2 different sizes, and cannot begin to count how many times I've used them to blow out plugged drains.

It may not work for you, but you're sure not out much to try.


 
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