whoosing noise

[tado921]

I was having a similar problem with a whoosing noise while vacuuming and water draining when the pump was turned off. I was also getting air bubbles in the pump strainer while the pump was running. It turned out that the gasket around top of the the pump strainer was worn out. I replaced it and the problem went away.

Look for any air getting into the system, either through a bad gasket or a leaking pipe joint. Hopefully others will have some tips as well. Good luck!

Tad

[Poconos]

Timmie,
Correct me if I'm wrong but when the water drains out of the pump basket, does it happen when you push on the valve handle to switch to backwash? If so this is probably normal. Think about what happens and thre effect of gravity. When you push on the handle you open all ports of the valve assembly and air can enter from the backwash (or waste) port and gravity will let water drain out of the pump basket back to the skimmer. Just turn the pump back on and it should prime and start pumping. Sounds like you changed equipment somewhere along the way and I'm not sure what that red handle is.
Al