How to Fix / Troubleshooting

Safety first: Turn off power before opening valves or pump housing.

Steps to reduce cavitation:

Eliminate air leaks: Inspect and lubricate the Jacuzzi pump lid O-ring, tighten suction unions, and ensure water level is adequate.
Open valves fully: Confirm suction valves are fully open to provide adequate water supply.
Inspect impeller: Remove the motor from the pump housing and examine the impeller for cracks, missing pieces, or excessive wear.
Clear suction line: If suction remains weak, have a professional check for line blockages.

Damaged impellers should be replaced with a genuine Jacuzzi impeller matched to your pump model.

Pump makes a loud rattling or grinding noise from the wet end, especially with air in the system.

Possible Causes