Pump runs but water flow is weak; pressure at the Emaux filter gauge is lower than normal and suction at skimmer is poor.

Safety first: Turn off the pump and close valves before disassembling any plumbing.

• Clean all baskets: Empty the skimmer and pump strainer baskets. Rinse thoroughly to remove fine debris.
• Check suction line: For above-ground pools, inspect flexible hoses for kinks or collapse when the pump is running.
• Inspect impeller: Remove the pump housing cover and visually inspect the impeller eye and vanes. Use a plastic tool to remove hair, seeds, or other debris.
• Reassemble and test: Refit the housing, ensure all unions are tight, prime the pump, and restart. Monitor pressure and flow.

If flow remains weak with clean baskets and impeller, there may be a blockage in the underground suction line that requires professional clearing.