Operator had rebuilt his PWC, registration IA 3924BK over the winter and was running a wet test for the machine.  Operator ran about a quarter of a mile down the Mississippi River, turned the PWC and headed back towards the boat ramp.  As Operator traveled the engine cut out and would not restart.  The PWC started taking water, while Operator tried to pull the machine to shore.  The machine sunk and was unable to be found a month later when they searched again.  Its unsure if the rebuilt engine added to much weight or if it was mechanical issue.  Operator swam to shore and was fine.  He wore his PFD.
BETTENDORF                    