Garbage disposal runs but water leaks only when the unit is operating, not when just running water.

Safety first: Turn off power and place a pan under the disposal before testing for leaks.

• Step 1 – Observe leak pattern: Run water without the disposal; then run the disposal with water. Note where water appears only during operation.
• Step 2 – Tighten discharge connection: Check the slip nut and gasket at the discharge elbow. Tighten or replace the gasket if worn.
• Step 3 – Inspect elbow for cracks: Remove the elbow and examine it. Replace if cracked or deformed.
• Step 4 – Check housing: If water appears from seams or the bottom only when running, the internal chamber may be cracked. In that case, replace the disposal.