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# VENTILATION VALVE > INSPECTION

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1. INSPECT VENTILATION VALVE SUB-ASSEMBLY

1. Install a clean hose to the ventilation valve.

1. Check the ventilation valve operation.

   1. Blow air into the cylinder head side, and check that air passes through easily.

      CAUTION:
        Do not suck air through the valve. Petroleum substances inside the valve are hazardous to your health.

   2. Blow air into the intake manifold side, and check that air passes through with difficulty.
      If the result is not as specified, replace the ventilation valve sub-assembly.

1. Remove the clean hose from the ventilation valve.