I am going to replace my heater core and radiator tonight, and was curious if there is a special procedure to bleed the coolant system.
Here is what I will do. Let me know if I should change anything:
1.) I will drain from the plug in the radiator (open cap on expansion tank first),
2.) plug drain and fill expansion with plain water, cover expansion cap and run car until thermostat opens and water is pumped throughout the system (allowing it to flush the system).
3.) wait for it to cool, and drain once more
4.) remove and replace heater core and radiator
5.) refill with fresh 50/50 coolant/water mixture
Does the system automatically burp air bubbles out the expansion tank with the cap on or off? Is there a special valve on the block i need to open to bleed the system, and where?