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 sink leaking out of dish washer pipe
Author: zgifford1221 (WI)

hello,

i am having troubles figuring out where the problem is under my kitchen sink. it doesnt seem to be draining correctly and is overflowing through the pipe the dish washer drains into.

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 Re: sink leaking out of dish washer pipe
Author: steve (CA)

There's a restriction in or below the lower tee fitting that needs to be mechanically clean. Don't use drain cleaning chemicals.

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 Re: sink leaking out of dish washer pipe
Author: packy (MA)

yean, loosen the kitchen sink tap adapter, remove the trap arm and stick a snake into that pipe to clear the clog..

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 Re: sink leaking out of dish washer pipe
Author: hj (AZ)

What handyman installed that 'hodgepodge" of a drain? There should NEVER be an "open" drain pipe below the level of the sink "overflow" point. ANY "backflow" in the drain line is going to overflow the DW standpipe.

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 Re: sink leaking out of dish washer pipe
Author: sum (FL)

Are the fittings glued together with clear cement?

I see blue color up top at the AAV vent not sure if that's blue PTFE tape or Rain Or Shine cement.

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 Re: sink leaking out of dish washer pipe
Author: pbw (OH)

just when you thought you've seen everything... there is a device call a dishwasher tail piece. this is used just below the sink basket strainer.

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 Re: sink leaking out of dish washer pipe
Author: zgifford1221 (WI)

I thought it looked weird too when i moved in.

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 Re: sink leaking out of dish washer pipe
Author: zgifford1221 (WI)

is my sink missing the dishwasher tail piece? i know nothing about plumbing.

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 Re: sink leaking out of dish washer pipe
Author: North Carolina Plumber (NC)

I'd cut the horizontal branch off of that lower tee and put a rubber test cap on the stub. Then a 1 1/2" dishwasher tailpiece between the basket strainer and the trap, loop the dishwasher drain up to the underside of the countertop and clamp it there and drop down into the tailpiece.

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