First off, let me say that I am a confident pool owner based on this site alone. I sometimes cannot believe how incredibly helpful everyone is here.
Now, I have noticed that my pump basket has recently began to lose prime (water settling back into the pipes). When I start the pump up, it primes and pumps fine with pressure around 12 PSI. When I turn the pump off, it appears to be normal; however I hear noise coming out of the waste port of the filter (sounds like an air valve leaking). After doing this multiple times, it seems that the filter is losing pressure when the pump it not running and allows water to fall back slowly (does not happen immediately).
To further my testing, I lifted the lid on the basket (water fell some) but I can still hear the air leak on the waste port of the filter (with the lid off). The air leak only goes away after time or if I turn the vari-flo valve to another setting. I do not see any water coming out of the waste port. For what it's worth, the handle does not "spring up" in the locked position any more. I place it in the notch for "filter", but it does not snap into the grove (raise up).
Am I correct in thinking that I need to replace something on the multi-port vale as that's why it's leaking air? Is that also the reason for my pump loosing prime?
Hayward Pro Series S244T - about 7-8 years old