you likely have a couple of issues to work thru.
first, if it was empty, then the original had to leak from somewhere...has this been fixed?
second, even if the leak was fixed, an A/C system needs to have a vacumm applied to draw out moisture.
third, not sure the size of the 134 can you used, but I think the SVX needs around 20 oz.
last, to tell if it's the compressor or some other component, you will need a gauge/gauge set that can handle reading pressures on both the high and low sides.
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