Burping a newage, jack car up as high as possible at the front ! get a juice bottle and cut the bottom off and fit the lid end into your top little water tank not the radiator, you now have a funnel type affair (could actually use a funnel I spose) sticking out of the little tank (make sure it's got a good seal in the tank, tape it if you have to, now fill engine through juice bottle so that you end up with 6-8 inches of fluid in the bottle higher than the tank, start car and run to thermostat open, then Rev car up down a lot hold revs at 2000 a half dozen times al the while going round the engine squeezing all the bigger water hoses to move bubbles (watch out for moving parts that remove fingers), this worked perfect for me after engine out and back in, make sure heaters on full also at all times
make sure there always 6-8 inches of fluid in bottle so as bubbles come out fluid can replace, don't let water get low and draw air in