Re: Just bought KM 38" Chiller (not pulling so well? help)
Sounds like your purge valve may be not working correctly. Make sure the ball bearing isn't stuck and that nothing is blocking it open.
A good way to check for leaks is to set up your hookah like normal, but don't put the bowl on. Cover the top hole with your finger and try to suck in though the hose. You shouldn't be able to suck any air in. If you are able to suck air in, you have a leak somewhere. If you blow out the hose, air should only escape from your purge valve.