I recently bought a kreppy and it's has a regulator value, I full prime the vac hose but as soon as I plug into bottom of skimmer my pump looses prime, when the vac hose is removed the pump recovers. Could the issue be no lube on pump basket ring even though I never see any water or air hiss when pumps turned off at full prime? Any suggestions would be great!
Extra info pull has drain pipe attached to skimmer and only one line to pump. Pool built 1972 1.5" pvc as I can see and pool deck has almost no settling