(a) Check the PCV valve (ventilation valve sub-assembly) operation.
(1) Start the engine.
(2) Slide the clip and disconnect the No. 2 ventilation hose from the cylinder head cover sub-assembly.
(3) Check that air is sucked into the cylinder head cover sub-assembly.
Standard:
Air is sucked into the cylinder head cover sub-assembly.
If the result is not as specified, replace the PCV valve (ventilation valve sub-assembly).
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