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Leak?

Posted: Tue Jul 03, 2018 10:43 am
by mytown
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.
https://youtu.be/g7z-dYhMrgk
The sound ends about 30 seconds after shutting off the engine.