Waterway pool pump runs but water in the pump basket appears to surge or oscillate, causing inconsistent flow.

Safety: Turn off the pump before clearing obstructions.

• Clean all suction points: Remove and clean skimmer and pump baskets. Check the main drain cover for blockage.
• Check water level: Maintain pool water level at mid‑skimmer to prevent air ingestion.
• Inspect vacuum equipment: If using a suction cleaner, remove it and plug the vacuum port. Run the pump to see if surging stops. Clean or adjust the cleaner if it is restricting flow.
• Seal air leaks: Address any suction‑side air leaks as described in the suction air leak section.