[Ernie Vitucci]

Good Morning...An old school way to work this problem prior to removing the head would be to get the engine hot and take a heat gun and check the temperature of the radiator carefully from left to right and from top to bottom to see if the temperature is hot across the top and cooler as the water travels down the radiator and is uniformly cooler at the bottom than at the top. Additionally. attach a recovery container at the bottom of the overflow tube and drive the car...if it overheats and the recovery tank is full...then it is the radiator and the water pump impeller in some form or the size of the sprocket on the water pump...if the recovery tank is dry...then you need to pull the head and see if it is the head gasket or a crack in either the head or the block...Ernie in Arizona