Testing AC Manifold Gauge On Different Cars - Non-working Compressor, Engine Off & Engine Running

[@stevehoward1632]

Enjoy your videos. Keep up the good work. Dad should be very proud of you.👍

[@EyeOnAiman]

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[@905Alive]

Please make sure that you ALWAYS use good quality safety glasses or goggles when using or working with refrigerants, when exposed to atmpospheric pressure they will be at the corresponding temperature at that pressure which can be -40F or less, it will freeze your skin and give you frost bite, if you get it in the eye, no more eye, frozen eyes do not heal.

[@winkawak]

I have a yellow jacket manifold with knob on the side. So its clockwise to close and counter clockwise to open.For some reason when i open the low pressure side, refrigerant are not being added. Any ideas?