Robert Davis, California - 1990 Subaru Legacy
Robert’s car is overheating. He replaced the water pump and thermostat himself, when it first happened six months ago, but it overheated again. He’s also replaced the radiator and tried another thermostat. Tom and Ray think he failed to purge the system of air so that air is trapped in the engine and heater core. If purging air doesn’t fix the problem it could be a blown head gasket.