Before I give up or start over I'd like to verify that the hissing sound in the video below is that of a leak and not some normal process. It is coming from near the orifice tube which I replaced. I was surprised to hear it since I drew down vacuum and the vacuum held for an hour. I then recharged the system and the ac is blowing cold.
The sound ends about 30 seconds after shutting off the engine.
Friendly format provided to inquire about automotive a/c systems.
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