I just installed a new 2 speed 3/4hp Superflo pump, and my air leak that I had before has grown worse, I think due to this pump working better than the last pump.
Air is leaking in at both high and low speeds. I wrapped a lot of electrical tape around all of the exposed plumbing fittings on the vacuum side hoping it would at least slow the air leak enough for me to find the faulty connection, but the rate the air leaked in never changed.
I also turned off the valve on the return line for the deep end drain (pictured on the right, coming out of the ground), and that did not change the leak rate.
So I think the leak is most likely located underground, somewhere between the skimmer, and the pump.
Is there anything I can do to confirm the leak location without digging? The only good news is I'm already preping for a lawn remodel next month, so I'm not worried about the lawn.
Here are pictures and videos to help show my setup.
Video of Strainer Basket at High Speed:
Video of Strainer Basket at Low Speed: