Hello, probably a simple fix, but I have a Merc 115 that has not been run for 1 1/2 yrs. I managed to coax her into starting but had fuel shooting out all three of the carbs. I thought this was just the floats stuck so I lifted the tops and manipulated the floats and pressure valves. Now it runs if you have the throttle forward 1/2 way when starting. Do my carbs just need cleaning? If so, what is the best way to clean? Can a person run the engine spraying carb cleaner in, or what?? Any help would be appreciated.