I just finished replacing my A/C system on a 1995 Camaro. New compressor, evap, condenser, etc. I’ve been careful to do everything right, and hooked up a vacuum pump & gauges to it today. I ran the pump for 45+ minutes, and then no issues as the system was holding vacuum a couple hours afterward.
But, when I then went to add the first 12oz can of refrigerant, the process was very slow. Took 20 minutes to get the whole can into the system. It did eventually all go in but that’s pretty slow, right? And I have another 20oz to go… Any ideas on what would cause this?