Sta-Rite pool pump runs but water flow surges up and down; pressure gauge fluctuates.

Safety: Turn off the pump before tightening or adjusting fittings.

• Stabilize water level: Ensure pool water level is high enough to cover the skimmer opening fully.
• Check skimmer weir: Make sure the skimmer weir door is not stuck partially closed, which can cause vortexing and air draw.
• Seal pump lid and unions: Clean and lubricate the Sta-Rite pump lid O-ring, and tighten suction-side unions.
• Isolate vacuum line: If a dedicated vacuum line is present, close its valve to see if surging stops. Leaks in vacuum hoses or fittings can introduce air.