Kawasaki Jet Skis - Vacuum hose that sucks out any water that gets in the hull stopped sucking.

I have a 88 kawasaki 650sx stand up jet ski. my problem is that the vacuum hose that sucks out ..

I have a 88 kawasaki 650sx stand up jet ski. my problem is that the vacuum hose that sucks out any water that gets in the hull stopped sucking.
the engine still runs like a champ except a little sluggish now that it has 3 inches of water in the bottom of the hull.
i checked all connecting hoses and i cant see any disconnected. i even pulled off the vacuum hose that was connected to the filter where water usually pumps out of and blew in it and there is no obstruction in the hose.
What's the deal?!!!!

The bilge is powerd by the suction of your jet pump. Its the hose in your cone on the pump, not the one in the pump. It is only going to get water out at high revs(this is when there is enough suction created to draw the water out.
The oem bilge isnt very good and if there is any obstruction in the line of cone it will not work even at high revs. You can remove the cone and make sure nothing is blocking the path of water from flowing over the hole in he cone. The real problem I see that you have is, why/how do you have water in there in the first place?