Air bubbles from return jets (like many others)

[jmshea]

Thanks Mark.

I was thinking Suction, but wrote Pressure! I've replaced the rubber gasket on the pump lid gasket as well as the two drain plugs. No change......

[mas985]

Then the next step is to look at the valves. Are these the ones with the screws so you can take it apart? Sometimes the o-rings get old and crack.

[PoolDoc]

. . . membership upgraded.