Well guys. I could use some help here. Have a 97 disco 4.0. Had the heads gone thru. New lifters. New gaskets. Only did this because I had an injector fail and bent a valve. Since this. I havent been able to bleed the air out of the coolant. Been over a month trying after work. Days off and whatnot. But I am lost. Runs good. But when she warms up she pushes antifreeze out of the pressure tank. No fluid swapping I can see. I've checked the fresh oil change no antifreeze. Also checked the antifreeze which also is all fresh. Any help is appreciated. About to run it with the thermostat out to see if that helps purge air or whatever my issue is

 

Check the heater hoses. Mine were backwards which kept an air bubble in the heater core.