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PCV Filter

Auto Systems and Repair

The positive crankcase ventilation (PCV) filter, or crankcase emission filter, is connected to the fresh air side of the PCV system. Its purpose is to filter outside air before it enters the engine crankcase.

Symptoms of Wear or Failure

  • Accumulation of dirt on filter

Related Repair Advice

  • PCV filters should be inspected whenever the PCV system or air filter is serviced
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