[Pvt-Public]

Is there a way to do a smoke test or some kind of pressure test on an AC system?

Smoke test, no. Pressure test, how, even off the system should be under pressure. If you need more pressure turn the system on, instant high pressure.

 

[Pvt-Public]

, but I can smell it inside the car, does it mean the leak is under the dashboard, hard-to-get-to part?

P.S. My car is 2016 Camry little over 100K. Will follow additional suggestions once this leaks out completely.

The smell might be from the A/C drain, not draining completely, or even a cabin air filter that got wet or damp. The leak is a separate problem, and if refrigerant was detected in the vents is may well be the evaporator. Which BTW is a nightmare to replace.

 

[Pvt-Public]

Replace these 2 valves and do you work again.... skip the dye test this time

I sort of understand replacing the valve cores, although I've rarely seen them to be the leak unless someone has already been screwing with them. But why skip the dye ❓ The dye could help identify other/future leaks.

 

[Pvt-Public]

If your ac is leaking but you can’t see evidence of the leak it’s time to focus on the evaporator core. Use a sniffer type detector and sniff the air coming out of the vents.