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Here's How A Bad PCV Can Ruin Your Engine

We don't mean to be the harbingers of doom, but it's unwise to keep driving if your car's engine has a malfunctioning positive crankcase ventilation (PCV) system, particularly a bad PCV valve.
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Mechanics warn ignoring PCV system problems can shorten engine life

The Positive Crankcase Ventilation (PCV) system rarely gets attention until something goes wrong, but mechanics are ...