Suction Leak Diagnosis Tips

Suction leaks can be a common issue with pool pumps. They can cause a decrease in pressure and prevent the pump from running properly. Some common causes of suction leaks include a cracked pump lidcracked pipes or valveslow water level, or issues with the o-ring of the strainer basket drain plug or pump lid 1. If you suspect a suction leak, you can follow these steps to identify and fix the problem:

  1. Check for air bubbles: If you see air bubbles in the pump strainer, it could be a sign of a suction leak. You can also check for low PSI or weak flow from the return jets 2.
  2. Inspect the pump lid: Check the pump lid for any cracks or damage. Make sure the lid is screwed on correctly and seated as it should be 3.
  3. Check the fittings: Inspect the fittings, valves, and plumbing joints for any signs of water coming out when the pump is turned off. This could indicate a leak 4.
  4. Use the smoke trick: You can use the smoke trick to locate the source of a suction side air leak. With the pump running, light an incense stick and slowly scan it over any PVC joints, valve ports, and covers, and pump housing. If the smoke gets drawn in, that will pinpoint the source of one of your leaks 5.
  5. Fix the problem: Once you have identified the source of the suction leak, you can fix it by replacing any damaged fittings or cracked pipes or valves. You can also use a sealant to repair any cracks or leaks 1.

I hope this helps you understand how to identify and fix suction leaks in your pool pump. If you have any further questions, feel free to ask!

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