Automotive Air Conditioning Information Forum

Forget tire Schrader valves and caps. That example was used so some idiot does not go and remove the schrader valve on a pressurized AC system.

Maybe there is a language difference here.

If you remove the cap from either the high or low side of your AC system you may get a very slow leak at worst ...

I came to this website looking for good information. After seeing this thread I am not so sure.

Please try removing your dust cap for 60 days. Measure before and after pressures with a quality manifold gauge.

Try removing your schrader valve for 60 seconds. Now measure before and after pressures ...