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1.Remove the ventilation hose from the PCV valve.
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2.Remove the PCV valve from the rocker cover.
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3.Reinstall the PCV valve at the ventilation hose.
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4.Start the engine and run at idle.
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5.Place a finger at the opening of the PCV valve and check that vacuum of the inlet manifold
is felt.
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At this moment, the plunger in the PCV valve moves back and forth.
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6.If vacuum is not felt, clean the PCV valve or replace it.
7.In case of 3A9 and 4A9 engine only, apply a small amount of new engine oil to the
O-ring on the positive crankcase ventilation valve, and tighten to the specified torque.
Standard value: 2.5 ± 0.4 N·m
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