The last couple times I've had my boat out it has run absolutely perfectly, but for some reason it is smoking excessively now. I ran one tank almost clear empty (probably less than 1/2 gallon til empty) before I switched tanks and that's when it all started. I switched and have had fresh fuel, but its still doing it. Its not the typical smoke you get when you start up a 2-stroke either. Quite the opposite actually. There is no smoke when I fire the motor... but after it is running a bit it starts blowing this THICK white smoke out the exhaust near the water's surface. If I had to compare it to something... I would say that the smoke looks a lot like the smoke that comes off of very, very wet wood in a fire. It is getting oil, my water pump is working proply, the temperature gague is always at its normal temp, and it runs just as good (if not better) than normal. I can't figure it out.