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Can anyone say their EGR valve *didn't* hiss when they did a pressure test / leak test? Search reveals at least 2 others have noted EGR valve leaks when doing pressure test / leak test, but it's not clear to me if it's abnormal for the EGR valve to hiss when doing the pressure test / leak test. My EGR valve is less than 2 years old and hasn't had a hard life, so I'm surprised to think it might be failed already. Thanks!
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