Have a 94 accord EX 5 speed. After about 40 miles it will start getting hot. The resevoir will have coolant coming from the cap. I will lose about 50 ounces of coolant. I have no visible water leaking in engine compartment, or white smoke from exhaust. I have flushed the Radiator, removed the thermostat, replaced the radiator cap, and added Block/radiator seal. There is no water in engine oil. When I bought the car was told Radiator was replaced. What else can I do pinpoint problem? I am thinking it is a Head gasket. Help.

 

Have you pressure tested the cooling system? Do the rad fans cycle on and off. Did you bleed the air from the cooling system.