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PCV valve test

Gonzaga
in Skoda Octavia Mk1 (1996-2004)

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Hello,

I have searched and find only how to remove the valve and etc. but I can`t seem to find any info on how to test the pcv valve if it`s working properly or not. When I do the boost test, air is exiting from the pcv valve, is this normal?

Should air be able to pass in direction -> Y breather pipe -> pcv valve -> TIP if that side is pressurized? Should the valve be closed?

Best regards

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