I change the water pump and no more leaking. I still have bubbles in the radiator. I have checked to oil and no radiator fluid is in the oil and there is no oil in the radiator fluid. I have check each cylinder and there is not radiator fluid in cylinders. People have told me its a head gasket but it has plenty of power. Once its warmed up i have a lot of steam and fluid coming out of the overflow tank. I am not 100% sure its a head gasket. Any thoughts before i tear in to this engine?