97 toyota tarago, manual, its pretty much always run rough but a few weeks ago we got the aircon regassed and since then the radiator reservoir has been boiling its butt off and its losing water something terrible. There is no water in the oil as yet. So far we have replaced the heater hoses, radiator cap, water pump and clutch fan, radiator cap and new radiator fan we put new oil in the engine, new radiator we are afraid we may have blown a head. Had the pressure test the gauge never moved so pretty sure its not a head gasket. At a loss with it as its our primary car and we need it because of my daughters heart condition next thing is timing and a new overflow bottle.