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Old 08-19-2009, 09:53 PM
gmercoleza gmercoleza is offline
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Join Date: Sep 2004
Location: DFW / Collin County Texas
Posts: 1,882
You can charge without running the compressor, but why? Just charge with the compressor running - it will seem to "suck" the refrigerant in much more quickly. You can start out charging both high and low sides with the system off, but make absolutely sure that you shut off your high side valve BEFORE starting the car, or you'll be eating some shrapnel!
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