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Why is my kitchen sink draining slowly and gurgling?

A slow-draining kitchen sink with gurgling sounds usually means a partial clog in the P-trap or garbage disposal. Here's how to clear it.

Category:Plumbing
Difficulty:Easy
Time:30 min
Success:50%
Updated:Jun 9, 2026

quick_referenceQuick Answer

For Why is my kitchen sink draining slowly and gurgling?, start with "Check the garbage disposal": Turn off power to the disposal. Use a hex key to manually rotate the flywheel to dislodge any debris. Then run cold water and reset the disposal. Stop DIY if water backs up into the other sink basin. This is listed as a easy recovery and usually takes about 30 min.

verifiedGuide Snapshot

Repair areaPlumbing
Estimated time30 min
DifficultyEasy
Stop conditions3

Last updated Jun 9, 2026. Review the stop conditions before continuing.

account_treeRecovery State

DeviceKitchen Sink
Current stateSlow Drain
Specific statePartial Clog
Failed stepWater Backing Up
Likely failure typeBlocked Path
DIY boundaryDIY recovery first
paymentsCost decision

help1. Understand the Problem

Slow drainage accompanied by gurgling noises indicates air trapped by a blockage. This is often caused by grease buildup or food particles lodged in the P-trap or disposal. If ignored, it can lead to a complete backup.

build_circle2. Try This First

Best First Step
Check the garbage disposal

Check the garbage disposal

Turn off power to the disposal. Use a hex key to manually rotate the flywheel to dislodge any debris. Then run cold water and reset the disposal.

visibility3. Visual Guidance

See what's happening and how to try the first recovery step.

1
Step 1: Remove the P-trap
Remove the P-trapPlace a bucket under the P-trap. Unscrew the slip nuts by hand or with pliers. Remove the trap and dump out any debris.
2
Step 2: Clean the trap and pipes
Clean the trap and pipesUse a bottle brush to scrub inside the P-trap. Run water through the pipe to check flow. Reassemble the trap.
3
Step 3: Flush with hot water and baking soda
Flush with hot water and baking sodaPour 1/2 cup baking soda down the drain, followed by 1 cup white vinegar. Wait 15 minutes, then flush with boiling water.
4
Step 4: Test drainage
Test drainageRun hot water for 30 seconds. The sink should drain freely without gurgling.

autorenew4. If That Doesn't Work

Try the next recovery options.

Use a plungerCreate a seal with a cup plunger over the drain and plunge vigorously 10-15 times.
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Call a plumberIf the clog is deep in the main line, professional snaking may be required.
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Frequently Asked Questions

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warning5. Stop DIY If

Don't continue if any of these apply.

reportWater backs up into the other sink basin
reportYou see black or gray water backing up
reportMultiple drains in the house are slow
Still stuck?Get personalized help with AI Recovery.

Same Device Recovery States

Device index arrow_forward
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Slow kitchen sink drainA slow-draining kitchen sink with gurgling sounds often points to a partial clog in the P-trap or branch drain. Here's how to clear it.
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Strainer leakWater dripping from the basket strainer under your kitchen sink means a dried-out gasket or loose locknut. Tighten or replace the seal before it rots the cabinet floor.
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Sink drain smellsA kitchen sink drain that stinks usually has rotting food sludge in the P-trap or a dried-out garbage disposal. Clean it in 10 minutes with stuff under the sink.

Similar Failure Pattern

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This page provides general DIY guidance.
If you're unsure, it's always best to consult a professional.