If your car has a PCV valve, and if your engine has been idling roughly or a malfunction indicator light goes on, check the valve.

Tech center manager Jason Scudellari Shows how a hidden PCV valve keeps your engine compartment looking show ready.

Check out how PCV valves are important to improve the performance and airflow of a big block engine, and how to use them and make them work for you in Corvette Fever Magazine.

Q–My 1985 Ford Crown Victoria, which I purchased new, now has 118,000 miles on it. I had the oil changed every 3,000 miles and the car runs like new. When I had the oil changed this week, the… ...