I got my koyo mounted in vertical position and I suppose to fill the filler neck with coolant but when i do that the coolant won't go in and just stays in place. how should i do it?

 

Are you letting it run with your heater on high and then topping it after the buzzer comes on?



https://www.rx7club.com/forum/showth...radiator+hoses

 

burp the system, squeeze the lower radiator hose till u see air bubbles coming out the filler neck. Repeat this process till your AST is filled up alil over half way or so.. Its going to take awhile but I was taught this process was the best way to actually burp the system...