we got a 96 seadoo speedster last spring and took it out a handful of the second to last time we took it out we put a gallon of oil in and were out on the water for 3 hours then a couple of days later we took it out again and after 45 min on the water one engine went out and then the other. After we got into the engine we could see that the pistons had seized because we went through a gallon of oil in 4 hours. Does anyone know if it might be due to the oil injection system malfunctioning or maybe a leak somewhere else? I talked to someone that has worked on some pwc and he says that the oil injection system is rarely the problem. It seemed to be blowing a lot of smoke even for a 2 stroke before is seized. Anyone have any thoughts on this? We sent our engine to full bore and should get it back this week or next.