I have a 98 BF25a 25hp that is idling with vibration till mid throttle then it goes away.I found water in the carbs that came from the service station(in gas can too). I replaced the plugs and tried adjusting the mixture screws on the top of the carbs with little improvement.This motor has about 150 hours and runs great other then this.Stabil used in gas in past and is preped and stored at a marina every year.This has been a problem starting this year.
