I have a 1998 Honda Accord, with the 2.4 liter 4 cyl. engine, and went thru this same problem. you may have to backtrack some to solve this issue. All coolant will reach a boiling point if not cooled down. some systems are intact, but inefficient, or have several small problems, showing up infrequently. I assume it runs ok up to a certain temperature , then overheats, and begins " spitting out fluid" ?. Can you see where approximately? As the coolant heats up it produces more pressure in the system, till it finds the weakest connection, and forces its way out, like steam out of a tea kettle. Honda's have many small coolant lines, which can leak, causing coolant loss ,and eventually overheating. First, If your thermostat is new, and installed correctly, the upper and lower Radiator hoses should get warm during operation of the engine. If the upper hose is "HOT", and the lower hose is "COOL" then the thermostat is not opening, and your engine cant cool the liquid down, leading to overheating.. check...