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Results tagged with pcv-valve
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user 1414
PCV is and acronym for Positive Crankcase Ventilation. It is part of a system that helps control air pollution by burning fumes that collect in the engine crankcase instead of venting them to the atmosphere.
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No check valve on valve cover
If the oil return passages are plugged, then at high rpm or after sustained operation you may be building up lots of oil in the head which is then finding it's way out into the airbox.
Since you did …
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