I have a Yamaha 2005 VX110, and a 2007 FX waverunner. Five days ago went to the lake everthing was ok skis ran fine water was coming from **** hole on both units. Went to the lake today no water coming from **** hole on both units. Ran both skis for three to four hrs. at speeds from 25mph. to 60mph. had no prob.with overheating. When I got home from the lake I disconected the hose from the engine on both skies and blew into them, air came out of the **** hole on both skis, no restricktion in hose going to **** hole. Can anyone explain to me with no water coming out of **** hole why I am not having a overheating prob. Should I take the skis to a dealer to have them checked out.