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And your friend may be perfectly correct. I just don't know. I just figure occasional replacement is a safe bet with the low cost.

Now I think there was another test regarding pulling the line (with valve on the end) and then thumbing the valve opening to see if it is pulling vacuum or something like that. I know if "Timer" gets on he will know how to deal with the PCV valve. Might also search the auto maintenance forums at Bobistheoilguy.com for PCV valve.
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