Recently I notice my vacuum robot doesn't run around the pool anymore. I tried cleaning the robot in and out but still no help. I tried plugging the robot to the skimmer line and it worked perfectly. My vacuum port on side of the pool is just very weak overall. I can feel suction but very very weak.
When the valve is open all the way for vacuum port only, barely any water flow through the pump.
What could be problem? Is my vacuum line clogged? I tried drain bladder but no help.