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Why is Air Coming Out of My Pool Pump?

Published in Pool Pump Issues 2 mins read

Air coming out of your pool pump is often due to a leak allowing air to enter the system. This can happen in various places, but according to the provided reference, a common culprit is the pump lid O-ring.

Possible Causes of Air in Your Pool Pump

Here's a breakdown of why air might be getting into your pool pump, based on the provided video reference:

  • Pump Lid O-Ring:
    • The O-ring under the pump lid is a key sealing component.
    • If this O-ring is damaged, dirty, or not properly seated, it can create a gap, allowing air to be sucked into the system when the pump is running.
    • The video explains at 2:34 that air can be drawn into the pump through the lid if the O-ring is compromised.

How to Check the Pump Lid O-Ring:

  1. Turn off the Pump: Always turn off the pool pump before inspecting or making adjustments to it.
  2. Remove the Lid: Carefully remove the pump lid.
  3. Inspect the O-Ring: Check the O-ring for any signs of damage, cracks, dryness, or dirt.
  4. Clean and Lubricate: Clean the O-ring thoroughly. Apply a lubricant specifically designed for O-rings (often a silicone-based product) before reseating the O-ring and the lid.
  5. Secure the Lid: Ensure the lid is properly secured to create a tight seal.
  6. Restart the Pump: Once done, turn the pump back on to check if the air problem has been resolved.

Other Potential Causes

Although the video emphasizes the pump lid O-ring, other common sources of air leaks in pool systems can also cause this problem:

  • Loose Fittings: Check the pump connections, unions, and all other threaded fittings for tightness.
  • Skimmer Issues: Low water levels in your skimmer or a cracked skimmer can cause air to be drawn into the suction line.
  • Suction Line Leaks: A crack or loose connection in the suction piping running from the pool to the pump can draw in air.

By examining and correcting these potential issues, you should be able to eliminate the air coming out of your pool pump.

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