Question about valve core removal tool and refrigerant pressure.
I know that after a vacuum, you should release the refrigerant before reinstalling the valve core as to not bring air back into the line. I've recently also heard that valve core removal tools aren't rated for super high pressures. The last installs I did, I was surprised by how much pressure was in the system and how difficult it was to press the stem back in. The youtube videos make it look like a breeze but it wasn't nearly that easy for me. In fact, a small amount of refrigerant escaped from the stem because the seal didn't hold up to that much pressure as I pushed it back in. I recently heard it might be wise to release only enough refrigerant to get a positive pressure, then install the core, then release the rest. Does anybody who works with these regularly have any advice on this?