Join Date: Jan 2012
Location: Yadkin County, NC
2000 SE Xterra
You will probably have to burp the system a few times to get all the air out. After I replaced my radiator it took me about 2 weeks to burp all the air out. Granted I more or less drained the whole system so I had more air in it than you will, but I would suggest checking it every few days until the air stops and then check it again in about a week. you will have at least as much air in the system as the heater core can hold if not more.
And the best time to do it in my opinion is when the car is idling after it has been driven for a while. The coolant will be hot, but the extra pressure in the system from the heat seems to help push the air out of the system easier. Just loosen the bolt up a bit until you hear the air start coming out and then be ready to crank it back down tight as soon as the coolant comes out.
Apply dirt liberally, rinse and repeat
<<<-click for build