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Thread: Sink backing up - wit's end has come and gone!!!

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    Default Sink backing up - wit's end has come and gone!!!

    Hi Everyone!

    I'm totally confused, and I'm hoping someone on here can help me please!

    Have done a total kitchen remodel. Everything worked great at first (like for a day!) but now my sink backs up. If I run the water it is fine for about a minute and then water starts to back up - which would suggest a blockage quite a way down the pipe somewhere right?

    If I leave the sink for 10 minutes and come back the water will have drained. If when it's backed up I have the disposal on water actually shoots out of the top of the disposal a little back into the sink.

    The kitchen is above the garage and I have a clean out down there about 10 ft below teh sink. I have opened that and stuck a hose in. There was no back-up so everything appears fine from the clean out downwards.

    I then snaked from the sink to the clean out. It was very nasty (50 years of gunk). It wasn't blocked before the remodel and and I cleaned stuff out and it seems fine. Still sink is backing up.

    Pipes from disposal to wall are all new.

    So Im now thinking it must be an air/gravity thing right? So I get on the roof and check the vent stack. That is all ok.

    What can it be? One thought I have had it that my new sink is much deeper than the old one and my new disposal is much bigger than the old one. This mean that now the drain from the diposal is about level with the wall T.

    Now I'm sure that's not ideal and have only just realized it was the case but it can't be causing the problem right? Water would still drain out of the sink as that is still higer than the wall T. And if it was a problem water wouldn't drain at all right? As I say right now it takes about 10 minutes for the water to drain.

    Did I miss something with the snake????? Please help! I've attached some pictures from under my sink just in case they help. You'll see my photography skills are about on par with my plumbing!!

    Thanks,

    Marc.
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