AC leak on 1996 Dodge Ram 1500

Has an ac leak I can't find. Can it be leaking in the fire wall or somewhere not so obvious? The compressor and fan work just has a leak I can't find.

Asked by for the 1996 Dodge Ram 1500
You could have a very small leak that is hard to detect. This is why technicians use a fluorescent dye with the refrigerant oil, then as the refrigerant leaks out, it leaves a trace of the dye that can be detected with a black light.
If the evaporator is leaking, since it is buried inside the dashboard, it can be very hard to detect.
How fast is it leaking?
2 more answers
i need adiagram of the a/c
The slow leak on my Dodge was from the fill conection. Use the very high tech way of testing it by putting some spit over the opening and see if it bubbles up.