Help! Air in pump basket and return line.

[Bgosper1]

I have tried everything to get this air out. Pump will fill for the most part but there is a lot of air in the basket under the clear lid.
Checked hose and clamps from skimmer to pump. Ok. Resealed and taped male fitting at skimmer. Ok. Replaced and greased O ring that connects the pump skimmer basket housing to the pump. Ok. Sprayed soap soap bubbles around fittings and multivalve at the top of the filter. No issues seen. Enough water in the pool and weir door ok.
So here is what I do notice.
The filter pressure gets high. Tried backwashing but it goes right back up

Return line has good pressure but shooting air and water back into the pool.
When I turn off the pump, I huge “burp” of air comes back into the pump and skimmer with enough force to push water and the skimmer basket out of the skimmer.

Also noticed if I move the multivalve to backwash with it turned off, air comes out of the backwash port.

[Teapot1]

So here is what I do notice.
The filter pressure gets high. Tried backwashing but it goes right back up

When I turn off the pump, I huge “burp” of air comes back into the pump and skimmer with enough force to push water and the skimmer basket out of the skimmer.

Tried backwashing the filter? As Yoda said "there is no try" you either have successfully backwashed the filter or haven't. Many people do not backwash for long enough and some domestic filters do not backwash well. When did you last open the filter and give it a real clean, remove the sand if necessary. Seen loads of filters where fine debris like clay has built up over the years and wouldn't backwash out.

Your other symptom is due to the high pressure in the system and some compressing of the air. So tackle the filter first. You could also have a blockage somewhere.

[Bgosper1]

I fixed it. The hose running from the skimmer to the pump had a small crack under the clamp I could t see. While the pump was running you could not see the leak I assume due to the suction.
But as soon as turned off the pump the water would leak out from under the clamp.

Put a new hose in and voila all set!
Crazy little thing caused so much trouble.

[Teapot1]

Yes they can and tiniest of leaks. What about your high pressure, thats costing you money to.

[Denniswiseman]

Thanks for posting back as your solution can help others