Inside a worn garbage disposal: rusty grinding plate and lugs seen from the sink

Garbage disposal smells

Food residue builds up under the splash guard and in the chamber. Clean the baffle and flush with cold water while running.

Cross-checked ~15 min easyBrands: All

Before you start

Turn off power at the breaker or unplug before reaching into or under the disposal
Never put hands in the grinding chamber; use the hex wrench or tongs

Diagnostic steps

Unlock all 2 steps with expected values

Full library + AI assistant for $34.90, one time.

Get lifetime access

OnCall Tech is a reference tool for trained technicians and can make mistakes. Always disconnect power and confirm with the manufacturer's documentation before you work.

More garbage disposals guides

Guide · Garbage Disposal

Garbage disposal hums but won't turn (jammed)

A humming disposal almost always has a jammed turntable: a hard object or packed waste is stopping the motor. Free the plate with the hex wrench from below (or a wrench on the impellers from above), clear the debris, then reset the overload. Never put a hand in the grinding chamber.

6 steps ~20 mineasy

Guide · Garbage Disposal

Garbage disposal dead: no hum, no power

Work from the simplest cause: the motor overload (red reset), then the breaker and outlet, then the switch type (wall switch, air switch, batch-feed stopper switch). Replace the disposal only after power is proven at the outlet and the reset does nothing.

5 steps ~30 mineasy

Guide · Garbage Disposal

Garbage disposal leaking: top, middle or bottom

Find the exact leak point with the paper-towel test. Top = sink flange seal or mounting; middle = dishwasher inlet or discharge elbow; bottom = water inside the housing. Flange and connection leaks are fixable; water from the motor housing itself usually means internal seal failure and replacement.

5 steps ~45 mineasy