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Re: Fails vacuum leak test (badly) but can't find leak
Posted to HVAC Forum on 4/8/2021


... I summarily toss and replace "black ball" type service valve high side taps (on GM's especially)...they are historically and typically GUSHERS of refrigerant AFTER you remove your gauge set from the test port...I fit them with (read: repairable) pin ... Login to read more.