Recovery bottle and hose is intact and not blocked. New cap is a Stant 15psi. For some reason, when it's cold outside the system builds pressure and the coolant won't flow unless I rev it up numerous times. The 'low coolant' light pops on and off as I'm driving too. I filled the radiator as it was running and kept topping it off as it was getting low. Eventually I can't keep filling it due to the fact that as it warms up the level starts to rise and come out the radiator filler neck. I was able to get some air out of both bleeders afterwards. I'm ready to jack the front up and fill it that way. Perhaps after doing the head gaskets there's still air in there. I'll keep ya posted if it works.