Problem: Coolant will not bleed off air with bleeder valves. They both open and both definetly flow. But with the car running and up to temp, I can't bleed the air out of the system. IE: open a screw, and it just stays open. Air doesnt all come out. How long should this take? After about a minute, still nothing but air. Perhaps there isn't pressure in the system? Which leads to #2. There doesn't APPEAR to be any coolant leak on the car. Perhaps the radiator car isnt sealing all the way? (seems like it is) Or do I just need to put more coolant in the reservior/radiator before I start bleeding. I'm rather lost here.

Engine runs fine, new temp sensors, no overheating. Just cant bleed off the air thats in the system.

 

Wait till the car heats up and only open one of the screws first, until coolant comes out, then the other. If you open both there wont be enough pressure.

 

I always open both at the same time and it is fine. Sometimes it takes a while for all the air to get out of the system. You can also use a pressure checker to check the pressure of your cooling system and possibly identify a leak.
Brandon

 

I only open one at a time. I'll give it 5 minutes next time. Hopefully it'll all come out.