× Auto Repair Pros Member Benefits TechHelp Knowledge Base Forums Resources My iATN Marketplace Chat Pricing About Us Join Industry Sponsors Video Members Only Repair Shops Auto Pro Careers Auto Pro Reviews
Join Now
International Automotive Technicians Network
Re: Fails vacuum leak test (badly) but can't find leak
Posted to HVAC Forum on 4/10/2021

This kind of perplexing issue can only be due to some seal that under low pressure allows atmosphere in. We all seem to recognize that.

I expect it is not a valve as you are keeping the couplers on during your vacuum testing. I hope the refrigerant was teste... Login to read more.