I have what I believe is a 1987 Mercury Outboard 6M. It was in a basment the basement got flooded. I got it running with a carb clean, new spark plugs and a fresh fuel filter. It will start, idles great but when you turn the throttle it does not start going foward or in reverse. I have no experience with boat motors. Please help me on any ideas on what it might be or any videos teaching me how to fix any problems with the same cause.