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leaky pipe under kitchen sink driving me nuts

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Posts: 8
(@bearrunner)
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Did you use plumber's grease on the seals when you replaced them? I've found it helps keep things watertight longer... saves a few bucks down the road.

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Posts: 5
(@jose_stone)
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"Did you use plumber's grease on the seals when you replaced them? I've found it helps keep things watertight longer... saves a few bucks down the road."

Good tip—I swear by plumber's grease myself. But honestly, I've noticed even with grease, if the seals aren't seated perfectly or if the pipe alignment is slightly off, leaks tend to come back sooner or later. Did you double-check the alignment when you replaced them? Sometimes just adjusting the pipes slightly or using slip-joint washers can make a surprising difference...

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ryan_rider
Posts: 3
(@ryan_rider)
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Had pretty much the same issue when I moved into my first place. Thought I was being smart by using plumber's grease on the seals, but after a week or two the leak came back. Turns out alignment really was the culprit. Even with everything greased up, if those pipes aren't lining up just right, you're fighting a losing battle.

Here's what finally worked for me: I took everything apart again (yeah, annoying), cleaned the threads and seals thoroughly, then loosely connected everything without tightening completely. Once it was all loosely in place, I adjusted each section little by little until everything lined up naturally without forcing anything into place. Then tightened it all down evenly—bit by bit, alternating sides. Took a bit of patience, but it hasn't leaked since.

So yeah, grease helps, but alignment is key. Worth checking that out if the problem keeps coming back...

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Posts: 3
(@sshadow34)
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Did you by chance check if the pipes themselves had shifted or settled? Had something similar happen after redoing my kitchen cabinets. Turns out the weight of the new sink caused a slight shift downward, throwing off alignment. Ended up shimming the underside just a bit before reconnecting everything. No leaks since... might be worth a quick look underneath to see if anything's moved around?

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Posts: 2
(@kevinj88)
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Yeah, I had a similar issue when I moved into my first place. Thought I'd be all handy and replace the faucet myself—big mistake, lol. Turns out the pipes underneath weren't exactly thrilled with my DIY skills and shifted just enough to cause a slow, maddening drip. Took me forever to figure it out because everything *looked* fine at first glance.

Definitely agree it's worth checking underneath carefully. Sometimes even a tiny shift can mess up alignment enough to cause leaks. Also, double-check the seals and washers while you're at it. When I finally got under there (with my trusty flashlight and questionable plumbing skills), I noticed one of the rubber washers had gotten pinched slightly during installation. Replacing that little washer made a huge difference.

Oh, and pro tip from experience: don't overtighten connections thinking it'll seal better—been there, done that, ended up cracking a plastic fitting. Lesson learned the hard way.

Anyway, good luck! Plumbing issues are always frustrating, but you'll feel like a champ once you finally nail it down... or at least that's what I tell myself every time I'm crawling around under the sink again.

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