Possible suction side leak.


LifeTime Supporter
May 4, 2010
I’ve been noticing air bubbles coming out of my returns lately and wondering if I have a suction side leak somewhere. Although the bubbles come out of the returns, I never see any in the pump basket. It looks air tight. I checked each of the 2 skimmers by plugging them one at a time. I also closed the main drain. Then I checked the diverter switch (jandy) by squirting soapy water on it but didn’t notice anything strange. In all tests, I still see tiny air bubbles coming from the returns.

So do air bubbles from the returns always mean a suction side leak even tho there are no air bubbles in the pump basket or is it possible that air is being introduced somewhere else after the pump basket? Like the filter, the heater, the SWG or the Polaris.

Any insight would be greatly appreciated


LifeTime Supporter
May 4, 2010
Well....what do you you know. Learn something new everyday. Turned off the SWG and the bubbles pretty much go away. I still see a bubble or 2 coming from the Polaris pressure side line about every 5-20 seconds but that’s it. Nothing I can see coming out of the returns. With the SWG turned on at 100% the bubbles were very constant.

Maybe not worth it to investigate the very small amount of bubbles coming from the Polaris return line. It’s hardly noticeable.

Thanks so much for that insight
  • Like
Reactions: Texas Splash

Texas Splash

Mod Squad
TFP Expert
LifeTime Supporter
Jun 22, 2014
Texas, San Antonio/Marion, South-Central Area
Pool Size
Salt Water Generator
SWG Type
CircuPool RJ-45 Plus
Thread Status
Hello , This is an inactive thread. Any new postings here are unlikely to be seen or responded to by other members. You will get much more visibility by Starting A New Thread