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Re: Fails vacuum leak test (badly) but can't find leak
Posted to HVAC Forum on 4/9/2021 1 Reply

I had this very same problem on my own truck last Summer, 1995 F-150. I could NOT find a leak ANYWHERE. It held pressure and charge, but leaked out after a couple of days, and terrible vacuum leakage. It turned out to be a cracked compressor shaft seal. Even w... Login to read more.

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