October 20, 2006, Newsletter Issue #117: PCV Valve
Tip of the Week
Do you know what a PCV valve is?
PCV, or Positive Crankcase Ventalation, valve controls the pressure that builds up in your engine. If it clogs, you can get leaks. If it wears out, you get excess crankcase vapors (oil vapors, blow-by) mixed in with the air and fuel in the intake system.
The PCV valve sits on the valve cover on a Chevy V-8 and ususally on the back of the intake manifold on a Ford. Changing one is very easy, once you find it. Simply pull the valve out of its socket, disconnect it from the vacuum line and install the new one.
Most manufacturers recommend this be changed evey year or 12-15 thousand miles.
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