Re: props to rodbolt
We have had the ethanol for at least 4 years now, and when I first got my old 88 4.3 Cobra it ran OK, then the next season, it had no power under load and would not plane off the boat at all. I took it to the best sterndrive mechanic around, he found a corroded anti siphon valve and some water in the carb, the tank was OK though. He replaced the ant-siphon with a better quality one and rebuild the Q-Jet. Since then it's been fine the last 4 seasons, I always change the fuel water seperator and use stabil at the end of the season. I am going to up grade to a Racor 10 micron the next time I change it, they probably are the best around and can hold a lot more water than the others. I have used the Sierra 28 micron ones without trouble but now we need all the help we can get.
Just another example of the govt forcing things on people because of special interest groups, and not listenting to anyone who understands machines.
I find it interesting that the FAA does not allow ethanol in av-gas. Maybe if gas powered boats were used to transport passengers the Coast Guard would same thing.
It seems that OBs were more affected than sterndrives, because of smaller passages in the carbs and more sensitivity (at least 2 strokes) to lean running.