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Recently I discovered a puddle of water underneath my kitchen sink. Upon
closer inspection I noticed that there was an intermittent leak coming from
the kitchen sink drain assembly where the P-trap connected into the bottom
of the kitchen sink. What was perplexing was that there was no apparent leak
when I just ran the faucet and let the water drain out the kitchen sink. It
turned out that the leak only manifested itself when the sink was first
filled with water, and then the drain plug was pulled out of the sink drain.
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It was while the large volume of water poured through the drain that I
observed water seeping around the large plastic nut that connected the
P-trap assembly to the kitchen sink drain itself.
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Photo by Mark Donovan |

Photo by Mark Donovan |
With the source
of the leak discovered I removed the P-trap by simply unscrewing the large
plastic nut that connected the P-trap to the kitchen sink drain. The P-trap
nut can be unscrewed with your hand. No tools were required.
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Upon close
inspection of the P-trap I noticed that the plastic washer that sat inside
the P-trap was deformed and quite dirty.
My first
attempt to solve the leak was to clean the P-trap and the plastic washer and
then reattach the assembly back to the base of the kitchen sink drain.
Unfortunately the leak persisted.
As a result of
the failure of my first attempt to fix the leaky kitchen sink drain, I went
down to my local home improvement store and picked up a new P-trap and a
separate plastic washer.
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Once back at my kitchen sink I decided to
see if I could save myself some money by just replacing the plastic washer.
Again, I unscrewed the P-trap nut that connected to the bottom of the sink
drain. I then swapped out the old plastic washer with the new one and then
reattached the plastic P-trap to the base of the kitchen drain sink. I also
made sure that the P-trap nut was tightly fastened to the base of the
kitchen sink. I then filled the kitchen sink with water and then removed the
drain plug. Sure enough, the leaky kitchen sink drain was a thing of the
past.
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For information on how to install a new
faucet, See HomeAdditionPlus.com's "Installing
a New Faucet Ebook". It provides in-depth, easy to
understand, step-by-step instructions and pictures, on how to install a new
Faucet.
Additional Home Plumbing Resources
Kitchen Sink Drain P-Trap Assemblies from
Amazon.com