I just removed the evaporator from my car because I couldn't find a leak in any other parts. There is no dye on the evaporator either but now that its out of the car I'd like to vacuum test it.
Does anyone have a trick to hook up gauges to a loose evaporator? The bottom pipe accepts a spring lock connector and the top pipe has threads with a captive nut. I need to connect it to the manifold gauge somehow. What kind of fittings/hoses would make a tight seal for an overnight vacuum test?
I'm thinking of also vacuum testing the compressor by itself but I'm stuck with the same problem of how to connect it to the gauges.
Pressure is a better test for leaks than vacuum. Better to use nitrogen as it's dry but if that's not possible just use air pressure. Connections will be an issue either way.
Making a setup for a compressor might be easier depending on the manifold type. Some would only need a flat piece of steel, one hole for the mounting bolt and two drilled/tapped for flare fittings or whatever.
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