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Home >> Nissan-Datsun >> 1985 >> Sentra SE, Automatic >> Repair and Diagnosis >> Engine Performance >> System >> PCV System >> Component Testing >> Diesel Crankcase Emission Control Valve
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Diesel Crankcase Emission Control Valve

  1. Remove crankcase emission control valve from valve cover. Apply vacuum to control valve's intake air duct port. See Figure . Check that air flows up through valve's port to valve cover.
  2. Place thumb over valve cover port on control valve and again apply vacuum to other port. If valve is operating properly, it will click when vacuum is applied.
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