How to replace your positive crankcase ventilation valve. With time the valve can become clogged with oil varnish or sludge which prevents it to work properly. It might affect your vehicle performance. This is the first time I'm changing it at 165K miles. For 2010-2013 models the valve is located in a different spot - on the right side of the front head cover. The valve itself is the same. ------- PCV valve for 2007-2013 MDX. US: Canada: ------- Please co
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