So here is the deal. I run my pump for 5 days straight and it's going strong. No issues at all. I look at the pump basket and I can see water topped up and everything. If I turn off the pump and I turn it on next day or even few hours, I will lose prime. I have to go back to the pool skimmer and use my priming tool and use my water hose to feed water into the line and it will start back again within minutes. When I push water through I can see bubbles from the return line and eventually it goes away once it has good prime. I'm not sure why this is happening but it's getting annoying because I have to prime every time I turn off the pump.
Also, when I vacuum the pool, after 15-20 minutes of vacuuming, I will start to lose prime as well. The suction is weak.
I attached some pictures and photos of how the pump looks when it's running. Doesn't look like any air leaks
Dropbox - photo 2015-07-06, 11 33 30 am.jpg
Dropbox - video 2015-07-06, 11 34 03 am.mov