Weird pump issue

[lostmonkey]

Last week my pump started making a much louder and higher pitched sound than usual. I assumed it was a bad bearing and shut it down. I had someone come out and quote me on a new pump and after he left, I tried turning the pump on and letting it prime. It sounded normal until it was primed and then the loud higher pitch came back. I shut it down, drained it and tried again - same result.

Is it possibly an issue with the impeller rather than the pump motor?

[Kenmyfam]

Whatever it is it will sound worse when under load. My guess is the bearing. Spray a little WD 40 on the bearing and if it goes quiet for a short while then you know what it is.

[Battlepoolguy]

Can’t lube the bearing on a motor, it may work for a minute. You have e anywhere between 1 day or 3 years before the motor is done

[lostmonkey]

https://youtu.be/A9CbcO_fHn0

A video of the way the sound changes as the pump basket fills up.

[Denniswiseman]

That was along time priming. Is that normal amount of time. You may need a non return valve

[lostmonkey]

Not normal - I had removed the cap at the front of the basket to drain it before turning it on.

[Teapot]

Badly cavitating pump by the sound of it, more information needed.