This guide provides explanations and tips for troubleshooting your pool for low water flow issues. We also provide links to any relevant guides for more in-depth guides. Click Here to Find Your Pool Pump Replacement Parts (Gaskets, Baskets, Impellers & More)
Step 1
Clogged Pump Strainer Basket - Remove the strainer basket and clean debris out with a hose.
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Step 2
Clogged Skimmer Basket - Remove the skimmer basket and clean debris out with a hose.
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Step 3
Clogged Filter - If your filter water pressure is creeping up to 10 SI above your filter's clean reading, the filter is clogging with too many contaminates and it is time to clean it. Increasing pressure goes hand in hand with decreasing water flow.
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Step 4
Clogged Impeller - If the pump's impeller is clogged with debris, water will not be able to flow out the side slots and generate a vacuum. Without a vacuum, the pump will not be able to suck as much water into the pump which reduces water flow. Remove the impeller and clean out the debris.
Click Here to Find Your Pool Pump Replacement Parts (Gaskets, Baskets, Impellers & More)
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Step 5
Excessive Water Demand - Are all the valves adjusted correctly? Too much equipment on at one time will stop many cleaners from working (waterfalls, spa jets, surface returns, etc.).
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Step 6
Undersized Impeller - When you last replaced a motor, did you match the impeller (and possibly the diffuser) to the new motor? If you put in a larger motor, you may have an undersized impeller.
Click Here to Find Your Pool Pump Replacement Parts (Gaskets, Baskets, Impellers & More)
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Step 7
Air Leak on Suction Side - A suction leak will reduce the vacuum generated in the pump which will reduce water flow and possibly lead to lose of priming in the pump.
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Step 8
Water Leak in the Pressure Side of the Pump - A pressure leak will cause lose of water and water pressure in the circulation lines between the pump and the pool return ports. Generally these leaks can be corrected by replacing a bad gasket in the pool equipment after the pump.
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Step 9
Pump Too Small - The pump suction cannot overcome the total dynamic head (line resistance) in your pool circulation system.
Click Here to Find Your Pool Pump Replacement Parts (Gaskets, Baskets, Impellers & More)
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Step 10
Underground Leak - If you have an underground leak, you can dig up some of the lines yourself. However, for generally less than $100 to $200 you can have a professional come in with special detection equipment that will pinpoint your leak including areas under the pool that you can't get to. Costs to repair the leak will vary according to where it is.
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