Plumbing draining VERY slow

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  #1  
Old 12-17-12, 12:12 PM
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Plumbing draining VERY slow

I am about to go mad. My kitchen sink is draining very slow. It'll take 3 hours to completely drain water after doing dishes.

Now, I have used Liquid Fire, Regular Drain-O, Drain Cleaner for organic matter, run a snake as far as I could, completely dismantled the plumbing under the sink and its all clear, put compressed air through them.

I'm at a loss, I don't know what to do or what could be causing the problem.

Any suggestions?
Zach
 
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Old 12-17-12, 12:27 PM
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If the sink has sat for a long time (overnight or all day) without any water being run. Then you run water. How long does it take to back up? If you give it enough time for the sink and lines to drain then run water. How long it takes to back up can give you an idea how far away the clog might be.
 
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Old 12-17-12, 12:39 PM
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Possibly you need a longer snake. How far is the line to the stack where it ties in?

You may have went up the vent when snaking. This is a learned technique to know, and make sure the snake goes down when you hit the tee for the vent.

Snaking should fix the issue.
 
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Old 12-17-12, 02:58 PM
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Do you know what type of piping you have in the walls? I've seen galvanized pipe clogged up with gunk except for a pencil-thin hole. Running a snake through just opens up the 3/8" worth of the snake, which doesn't do much.
 
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