I am having the same prob in my 94 Accord EX. The car has always lost water about 8 oz a day if I drive more than 50 miles or 3 hours. Recently my overheating became worse and I changed the hoses thermostat cap radiator and wired the fans ign. on. I live in Phx at 112 deg. daily. The car seems to run as normal for about 30 min and then within one minute will spike to the red zone. Now the idle is very erradic but the car picks up strongly after 3500 and in V-tec. I suspect that my last overheat helped the timing belt skip a tooth. Soo...... Any helpful advise. The motor is a JDM F22a Ive put about 25,000 hard V-tec every shift (auto) miles since last summer. Tuffy