AAAHAAAA! I think lol.........ok I shut it off tonight the same way I mentioned before (after letting the air valve open til it ran just water) after I shut it off I closed the air valve and for several seconds (about 15 or so) I could still hear and feel air coming out of the air valve that was closed. So technically couldn't this be where it's sucking the air in from?
It bugged me all day that while I can get the geiser to stop by using the air valve prior to shutting it off, doesn't it reason that I am merely treating the symptom?
I tried tightening the air valve (just by hand) to see if I could get it to stop, but it just kept pushing air out, not a huge amount, but in my mind I would think that over several hours of running that it could suck in enough air to cause my geiser problem. Does this sound on track?