[THEFERMANATOR]

EVERY boat should have a spin on fuel water seperator mounted just before the engine where it is easily accesible. Can't tell you how many times I've had to stop at sea to swap one out. But its better than plugging a carb up and burning your engine down. Beings this is an I/O, check your fuel pump. Most I/O pumps I've encountered have there filters on the intake side so the only filter to catch debris coming out of the pump is the filtet in the carbs inlet. If you have filters before the pump not plugging but are still getti,g debris into your carb, then the only place it can come from is the pump itself, and is normally a sign that its diaphram is coming apart(when this happens, they start dumping gas either into your engine, out the vent hose, or worse, into your bildge.