Basket o'ring leak?

[tcat]

Have a Whisperflow pump, been trying to fix air problem for weeks. New o'ring. Basket water level drops 50% in 8 hours. I've cleaned and tried silicone grease, and teflon plumbers putty. After pump stops I can see a bubble about every 10 seconds go to the top of the lid. The pump primes in about 30 seconds, should I worry about it? Anything else to try? New lid?

 

[Bama Rambler]

There have been a couple of threads where there turned out to be a hairline crack in the basket lid.

Are you sure the lid is where the leak is?

 

[tcat]

Not sure where the leak its, but does look like the bubbles come from the edge of the lip. Could be coming from below I suppose. Any dye I can spray on to see if it shows a crack up?

 

[Bama Rambler]

Careful inspection under bright lights is how the previous ones were found I believe. There is dye tests that you can buy, but they're probably more expensive than a new lid.

 

[Qwaxalot]

In the meantime, pull out the pump drain plugs and examine the little o-ring. They often develop hairline cracks that will show up as a tiny bubble entering the pump.