[caterashaker]

Try using Slick 50 Fuel Sytem Cleaner to get the water out of the system. It may take a couple of bottles; then use Lucas Fuel injector cleaner. You will be amazed at the results. Ethanol is great for the environment but not that great for your Cat. It is VERY corrisive in it's pure state. The only difference that I see using premium is better gas mileage.