have "69" hp evinrude, new coils (tested),condensors, fuel pump, rebuilt carb, points clean. Runs great then after 30 min she bogs, then shuts down. Flywheel really hot barely can hold hand there. Another 30 min starts up. Did these 3X. Sprays water great, took thermostat off and started motor water came flowin out of top not really strong. Should it shoot out of top? Gonna try spark tester today after she shuts down maybe defective coils. Could it be some vapor lock in carb or pump cause fuel getting too hot?