My personal method to bleed out cars is to remove the rad cap and to unbolt the thermostat housing. Then I fill up the radiator as much as possible and also fill up the engine as much as possible through the thermostat hole. I replace the thermostat housing and fire it up without a cap. after 5 or 10 mins it will burp and I add the rest of the coolant. If it still overheats after that then you have a bad rad or thermostat ect ect.