BREATHER HOSE
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- Inspect the breather hose for cracks or damage.
- Clean the inside of the breather hose if necessary.
- Inspect the ventilation filter for clogging.
VENTILATION HOSE
- Check entire circumference and length of hoses using a mirror as required.
- Check all clamps for tightness and the connections for leakage.
- Hoses should be replaced immediately if there is any evidence of deterioration or damage.
POSITIVE CRANKCASE VENTILATION SYSTEM CHECK
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- Remove the ventilation hose from the PCV (Positive crankcase ventilation) valve.
- Remove the PCV valve from the rocker cover.
- Reinstall the PCV valve at the ventilation hose.
- Start the engine and run at idle.
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- Place finger at the opening of the PCV valve and check that vacuum of the intake manifold is felt.
NOTE:
At this moment, the plunger in the PCV valve moves back and forth.
At this moment, the plunger in the PCV valve moves back and forth.
- If vacuum is not felt, clean the PCV valve or replace it.
PCV VALVE CHECK
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- Insert a thin rod into the PCV valve from the side shown in the illustration (rocker cover installation side), and move the rod back and forth to check that the plunger moves.
- If the plunger does not move, there is clogging in the PCV valve. In this case, clean or replace the PCV valve.