I have an inground pool with spa that cascades into the pool. There is a shared main pump, and a second pump for the spa jets.
The spa jet pump does not keep its prime any longer. We turn on the spa pump and do not feel any pressure. If I briefly apply some back pressure to one of the spa jets and release, it will start to gurgle. A couple cycles of this and the pump primes and when it takes it will put out great pressure.
Does this give any clues to what the problem could be?
The pump itself has not needed service in the last 10 years.
The pump never lost its prime as long as we used the spa monthly. I am ordering new O-rings.