Garbage Disposal Jammed or Making Noise? Quick Fixes

A jammed garbage disposal is one of the most frustrating kitchen problems, but the good news is that it's usually easy to fix yourself without calling a plumber. The most common issue is something hard—like a bone, fruit pit, or utensil—lodged in the grinding chamber, preventing the impellers from rotating. Understanding the sounds your disposal makes and knowing the proper unjamming technique will save you time, money, and hassle.

Understanding Garbage Disposal Sounds

Humming But Not Grinding

If your disposal hums but the grinding plate doesn't turn, it's jammed. The motor is trying to run but something is blocking the impellers. This is the most common disposal problem and indicates a physical obstruction. Don't let it hum for more than a few seconds—continued humming without rotation can overheat and permanently damage the motor.

Loud Grinding or Rattling

A loud grinding, rattling, or clanking noise usually means something hard (like a bone fragment, fruit pit, or piece of glass) is bouncing around in the grinding chamber. Sometimes the disposal will still operate but makes terrible noise. Turn it off immediately and remove the foreign object to prevent damage to the impellers and grinding ring.

No Sound At All

If the disposal is completely silent when you flip the switch, it's either not getting power or the motor has failed. Check the reset button first (see below), then verify power at the circuit breaker. If power is confirmed and reset doesn't work, the motor may be burned out and require replacement.

Leaking Water

Water leaking from the disposal typically indicates a worn rubber gasket (where the disposal connects to the sink), loose mounting assembly, or cracked disposal housing. This requires tightening connections or gasket replacement—not a jam issue but needs attention to prevent water damage under your sink.

Step-by-Step: How to Unjam a Garbage Disposal

Step 1: Turn Off Power

Essential first step: Go to your electrical panel and turn off the circuit breaker that controls your garbage disposal. Don't just flip the wall switch—someone could accidentally turn it back on while you're working. If you're uncertain which breaker controls the disposal, turn off the breaker labeled "kitchen" or test by turning breakers off until the disposal switch no longer works.

Step 2: Press the Reset Button

Before doing anything else, look at the bottom of the garbage disposal unit under your sink. You'll find a small red or black reset button, usually in the center of the bottom plate.

How to reset: Press the button firmly. If it clicks and stays in, the thermal overload switch has been tripped (from overheating or overload). Wait 10-15 minutes for the motor to cool, then try running the disposal. If it pops back out immediately, the disposal is still jammed or the motor is faulty.

Step 3: Manually Rotate the Impellers

Most garbage disposals have a hex-shaped hole on the bottom center of the unit. This is designed specifically for unjamming.

If your disposal doesn't have a hex hole: Some models (particularly InSinkErator) don't have bottom hex holes. Instead, insert a wooden spoon handle or broom handle into the disposal from above (with power OFF) and push against one of the impeller blades to manually rotate the grinding plate. Push firmly in one direction until it rotates, then push the opposite direction.

Step 4: Remove the Obstruction

Once you've freed the impellers, remove whatever caused the jam:

• Use flashlight to look into the disposal from above
• Use tongs, pliers, or needle-nose pliers to remove visible objects
• Never use your fingers—even with power off
• Common culprits: chicken bones, fruit pits, bottle caps, twist ties, small utensils, glass fragments

Step 5: Test the Disposal

After unjamming and removing debris:

1. Turn the circuit breaker back on
2. Run cold water into the sink
3. Press the reset button on the bottom of the disposal one more time
4. Turn on the disposal switch
5. The disposal should run smoothly without humming or grinding noises
6. Let it run for 30 seconds with water running to clear any remaining debris

Preventing Future Jams

Best Practices for Disposal Use

• Always run cold water: Start water before turning on disposal, keep running during operation, and continue for 10-15 seconds after turning off
• Feed waste gradually: Don't dump large amounts at once
• Cut large items: Break up bigger food scraps before disposal
• Use cold water, not hot: Cold water solidifies grease so it can be chopped up and flushed; hot water liquefies grease which then re-solidifies in pipes
• Clean monthly: Grind ice cubes and citrus peels to clean and deodorize

When to Call a Professional

Contact a professional if:

• The disposal won't unjam using the Allen wrench method
• Reset button pops out immediately even after cooling
• Disposal is completely silent (no humming) even after reset
• Water leaks from the unit
• You smell burning from the motor
• The disposal is more than 10-12 years old (may be more cost-effective to replace)
• Frequent recurring jams indicate worn impellers or internal damage

Check our DIY repair guide to understand when to attempt repairs yourself versus calling professionals, or read our kitchen safety tips for preventing appliance accidents.

Top Notch LA Appliance Repair services garbage disposals throughout Los Angeles County, including unjamming, repairs, and full replacements. We work on all major brands including InSinkErator, Waste King, Moen, KitchenAid, and Badger. Same-day service available for urgent disposal problems. Call (323) 827-7237 for fast, professional assistance.