This topic was split from This thread for better response. Bama
I'm curious what was found here? I am trying to figure out a problem that is very similar with a Dynamo Pool Pump. The basket is full of water when running, yet air is returning to the pool. The air is also constant from the air relief valve in the filter. I only notice air coming into the basket when the pump shuts off, and it almost appears to be coming in from the discharge port inside the pot. I'm about ready to rebuild the pump with a new gasket, impeller and everything, but I'm not sure if there's any freak cases where cavitation will cause bubbles to make it all the way out to the returns.