The Family Handyman on MSN1y
How To Test and Replace the PCV Valve on Your Car
Remove the PCV valve from its grommet. With the engine off, shake the valve. If it’s good, you’ll hear a solid clicking sound ...
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How To Replace Your Car's PCV Valve (And Why You Might Want To Every 4-5 Years)
If the hose and grommet are up to snuff ... As for when you should replace your PCV valve, about every 30,000 miles is the recommended interval for the valve installed in the Ford.