I own a 90 HP Suzuki V four -1993 (two stroke w/ oil injection). The engine runs great (5800 rpm) for ~ 30 minutes of run time. Then the motor suddenly drops down to ~ 3200 rpm. It will run this way until I shut the boat down for several hours. The next time I run it it will do the same thing over again. I've taken the boat into several repair shops - all have done the same thing - change the spark plugs - drop it in the water for 15 minutes and tell me it's as good as new. The last two times I've had the boat out it has completely died (instead of only dropping to 3200 rpm) after running good for several minutes. Any insight as to the nature of this problem would be greatly appriciated. Thanks
