A bathroom sink stopper that will not close, will not open or will not hold water usually has a problem under the sink: the pivot rod has come off the lift rod strap, has broken, or is out of adjustment. Moen’s fix is to check the pivot rod at the back of the drain, reconnect it to the strap with its spring clip, and re-set the lift rod height. If the stopper seal is worn out, replace the pop-up drain.
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If the drain is worn out: a replacement pop-up drain. Check the Moen replacement drain kit on Amazon
Diagnose It by the Symptom
- You lift the rod but the stopper does not move: the pivot rod under the sink has come off the lift rod strap or has broken.
- The stopper will not close all the way, or will not open far enough: the pivot rod and lift rod need adjusting.
- It closes, but the water still drains away: the stopper’s seal is worn or the rod is not letting it seat. Our pop-up drain guide says to re-set the rod height or replace the assembly.
- The sink drains slowly with the stopper open: hair is wrapped around the stopper. See slow-draining sink.
- Push-to-open stopper with no lift rod: that is a click-style drain, which has no pivot rod to adjust. If it sticks, it usually needs cleaning or replacing.
How to Fix a Pop-Up Stopper (Lift-Rod Style)
These steps follow Moen’s troubleshooting for a pop-up drain that will not open or close properly. Clear out the cabinet under the sink and have a towel ready; a little water can run out at the pivot nut.
- Find the pivot rod. It is the horizontal rod that goes into the back of the drain pipe under the sink, held by a pivot rod nut. Moen says the nut can be unscrewed to look at the rod; if the rod is broken, replace it.
- Check the lift rod strap. The lift rod (the one you pull up behind the faucet) passes through a metal strap with a row of holes and is held by a strap screw. Make sure the lift rod is in the strap and the screw is tight.
- Reconnect the pivot rod. Push the pivot rod through one of the strap’s holes and hold it with its spring clip.
- Set the height. Moen’s method: put the drain plug in the fully open position, loosen the strap screw, set the lift rod so its knob clears the faucet, and tighten the screw again. Test it, and move the pivot rod to a different hole in the strap if the stopper still does not seat.
- Snug the pivot nut by hand if it drips, and run water to check.
Your faucet’s installation instructions show the exact layout for your model, as Moen notes.
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Parts That Fix It
Each part below was sold or shipped by Amazon, new and in stock, when we checked on September 23, 2026; details come from each Amazon listing.
- A replacement pop-up drain, lift-rod style. Moen replacement drain kit, chrome: the listing says it is compatible with most Moen bathroom faucets.
- A click-style drain with no lift rod. Kohler Clicker drain with overflow (RH1274364-CP): the listing gives it an overflow design and a universal fit. Use an overflow drain only if your sink has an overflow hole; our pop-up drain guide explains the difference.
- Plumber’s putty for the drain flange, where the new drain’s instructions call for it: Oatey 31177 plumber’s putty, 9 oz.
- A hair-clog tool for the slow drain: FlexiSnake Drain Weasel (5 wands).
When to Call a Licensed Plumber
- The drain body or the pipe below it is cracked or corroded and leaks where you cannot tighten anything.
- Water shows up inside the vanity from a connection at the wall.
- The sink is stone, glass or a vessel bowl and the drain is stuck in it. Forcing it can crack the sink.
FAQ
Why won’t my bathroom sink stopper stay up?
On a lift-rod drain, the pivot rod has usually come off the lift rod strap or the height is out of adjustment. Reconnect the rod with its spring clip and re-set the strap, as Moen describes. On a push-to-open drain, a stopper that will not stay up usually needs cleaning or replacing.
How do I get a pop-up stopper out to clean it?
On most lift-rod drains the stopper is held by the pivot rod. Loosen the pivot rod nut under the sink and pull the rod back, and the stopper lifts out; push the rod back through the stopper’s loop when you reinstall it.
Are pop-up drains universal?
Most fit a standard bathroom sink opening, but tailpiece length, finish and overflow style vary. Our pop-up drain guide covers how to match yours.
Why Trust Plumbing Picks
Plumbing Picks is written by a Journeyman Plumber — State of Georgia Licence #JP507711 — and the license is verifiable through the Georgia Secretary of State’s license verification portal. The steps on this page follow the manufacturer sources listed below, and product details come from the Amazon listing, not from hands-on testing. Nobody pays to be included here. Where a link goes to Amazon we may earn a commission at no extra cost to you. More on who writes this and how we pick.
Sources
Bottom Line
Look under the sink first. Reconnect the pivot rod to the lift rod strap with its spring clip, re-set the height the way Moen describes, and clean the hair off the stopper while you are there. If the seal is worn or the drain body leaks, a new pop-up drain is a short job.