My pool spa has eight jets that have a dedicated pump. One of the jets is much stronger than the others, with one of them actually sucking in water. The pump maintains a good prime, and there seems to be no air intake. I recently changed out the motor to the pump, and the impeller and diffuser were in good shape. I put in a new mechanical seal, and new diffuser gasket and body o-ring. This issue was present before the motor change. If i plug most of the jets, flow does resume to the jet that sucks water in. Any ideas or suggestions?
Thanks!
Rob