Replacement of PCV valve on the 2003 – 2007 Accord (4Cyl)
Introduction: The Positive Crankcase Ventilation (PCV) valve serves to vent the blow-by gases that make it to the crankcase from the combustion chamber via the piston rings. Increased crankcase pressure can lead to oil leaks e.g. from the valve cover gasket. Leaks due to a clogged PCV valve would often occur via multiple channels due to the raised crankcase pressure.
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