Re: Has anybody here used a do it yourself AC charge kit?
Either get an A/C manifold set, the gauges and hoses made for the fittings on the lines, R12 is a screw on fitting, R134A is a quick disconnect, and get a rough vacuum pump and evacuate the system for about an half hour. Shut off the valves and see if it holds a vacuum, overnight would be good.
If you have a leak and does not hold a vacuum, pressurize with nitrogen to 150 PSI and Snoop® the bejesus of all the fittings and hose crimps. See bubbles, it may take about 30 minutes for minute leaks, fix it.
Evac again. Then add freon of choice. Set a box fan in front of the car to aid in cooling of the condensor and radiator. If an orifice system, set evap pressure for 30-32 PSI.
Or get your A/C buddy over to help.
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