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Re: GM P0440 Evap control system
Posted to Technical Discussion Forum on 9/27/2006

This is my home made [Evap system tester]. I use the shrader fitting to feed low pressure nitrogen into the system via the service port when it is sealed and observe the gauge for decay. If it drops, I go sniffing and listening with a stethoscope. Has worked o... Login to read more.

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