Found the “damned leak” in HEVAC. Fortunately using the Nitrogen pressure test i sourced it with bubbles at the drier! Top nut wasn’t snugged down enough, actually was finger tight. All tight as a drum now and holds the 100PSI I put in for an hour at least.
I note that the system requires 49oz of R134a plus oil. Having never refilled a system from empty I need help with this.
Whats the technique for filling the system? Do I buy 4 x 12 oz R134a with the oil added or do I get the R134a and add the oil separately.
Any other tips, tricks, warnings or ‘lessons learned” before I pull the “trigger”?