Category: Pool Pump Losing Prime
A pump that loses prime after running is different from one that won’t prime at all — the air leak is slow enough to let it start but bad enough to kill flow under load. This section covers slow suction leaks, intermittent O-ring failures, and the less obvious causes that are easy to miss on a quick inspection.
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Read the Guide →: Pool Pump Air Lock — How to Break It and Restore Flow
Pool pump surging and struggling to prime instead of just losing prime slowly? You may have an air lock, not a leak. Here’s the difference and how to clear it. Read the Guide →
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Read the Guide →: How to Prime a Pool Pump — Step-by-Step for Every Situation
Priming a pool pump means filling the housing with water so the impeller has something to pull. The correct sequence: fill the strainer housing completely with a garden hose, seal… Read the Guide →
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Read the Guide →: Pool Pump Check Valve Problems — Symptoms and How to Fix Them
A check valve allows water to flow in one direction and prevents it from flowing back. When a pool pump check valve fails, water drains out of the suction line… Read the Guide →
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Read the Guide →: Pool Pump Air Bubbles in Returns — What They Mean and How to Stop Them
Bubbles coming out of your pool return jets means air is getting into the suction side of the pump. About 55% of the time it’s the strainer lid O-ring. Apply… Read the Guide →
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Read the Guide →: Pool Pump Losing Prime — Why It Keeps Losing Suction and How to Stop It
A pump that primes then loses it after 10–20 minutes has a slow suction-side air leak — not a failing pump. The leak is too small to prevent cold priming… Read the Guide →
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Read the Guide →: Above Ground Pool Pump Troubleshooting — Fix the Most Common Problems
Above-ground pool pumps fail differently than in-ground systems because they sit above the water level and fight gravity on every startup. About 65% of above-ground pump problems trace back to… Read the Guide →
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Read the Guide →: Pool Pump Not Priming — 7 Causes and How to Fix Each One
A pool pump that won’t prime is almost never a dead pump — it’s an air leak or a blockage somewhere on the suction side. About 60% of the time… Read the Guide →