Problem with prime!

[Crm101010]

I recently noticed a problem with the pump acheiving a prime. The problem that I'm having is that there seems to be a large rush of air that I can see in the pump basket and check valve right as prime is achieved. Pressure on the filter quickly zeros right after it builds to normal operating pressure. The pump seems to prime for a brief second before losing its discharge pressure. I found a leak at the quick connect in the discharge side which was replaced with no change in the prime. I have also checked all gaskets and replaced the check valve as I noticed there was a stripped out screw in the cap. Any suggestions where this air is coming from?

On a side note the pool equipment is located about 10 feet above the pool.

 

[carpenter333]

Soapy water is your friend when looking for air leaks.

Are you able to bleed the air from your filter pressure valve? Does it return?

 

[jblizzle]

Welcome to TFP!!!

Please add your pool details to your signature as described HERE as it will help us help you.

Is the water in the pool high enough in the skimmer? Is the skimmer weir door getting stuck?
You can use shaving cream to look for suction leaks.
See: Pool School - Suction Side Air Leaks

 

[Crm101010]

Yes I am able to bleed air and yes it still returns

 

[VikingPoolMan]

My guess is low pool water and/or your skimmer flap is stuck (or there is something obstructing flow in your skimmer). Do this... turn your pump on and go look in your skimmer... does it move water for a few seconds... then, as the pump primes, it starts sucking everything down like a waterfall (thereby getting air into the system) then it stops and eventually repeats the process?

 

[Crm101010]

Yes the water level is plenty high and door is working properly

 

[weird_tolkienish_f]

Are you getting bubbles in the pump basket?

 

[Crm101010]

Problem solved thank you. The skimmer door was moving but it could not fully open as the was a small twig jammed in the hinge. Thanks for your help!

 

[jblizzle]