Hello all,
My AC has been converted to r134a, so I have r134a fittings on both high and low side service ports.
Today I noticed I was low on refrigerant due to a slow leak coming from the low side service port. I removed the low side r134a adapter (cheap plastic from Auto-Zone) and saw/heard the leak actually coming from the r12 valve stem welded to the hose. I went to NAPA Auto Parts and picked up a good quality low side r134a adapter, only to find it's shorter than the one I got from Auto-Zone. When installing, the new adapter immediately presses down on the r12 valve. And when completely tightened, it doesn't let me depress the valve on the new adapter.
Do I need to remove the r12 schrader core before I install the r134a adapter?
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Thanks!