TwinTurbo.NET: Nissan 300ZX forum - It's a pressure relief valve
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Subject It's a pressure relief valve
     
Posted by ttsmokin on July 21, 2015 at 2:34 PM
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In Reply To Sadly, I'm coming to the same conclusion... posted by OverZealous (CT) on July 20, 2015 at 09:52 PM
     
Message In case the system pressure exceeds a certain set point, if there was a restriction or blockage in the system or the system was charged with too much refrigerant.

You could rent a set of A/C gauges from an auto parts store to check out system pressures and see if there is anything left in the system.

Can you check over the hoses to look for any obvious rips or cracks?

     
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