Tacoma 2WD V6-3.4L (5VZ-FE) (1995)
Positive Crankcase Ventilation Valve: Testing and Inspection
1. REMOVE PCV VALVE.
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Disconnect the PCV hose from the PCV valve.
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Remove the PCV valve.
2. INSTALL CLEAN HOSE TO PCV VALVE.
3. INSPECT PCV VALVE OPERATION.
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Blow air into the cylinder head cover side, and check that air passes through easily.
CAUTION: Do not suck air through the valve. Petroleum substances inside the valve are harmful.
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Blow air into the air intake chamber side, and check that air passes through with difficulty.
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Blow air into the air intake chamber side when lift up the inside valve, and check that there is a strong resistance to air flow.
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If operation is not as specified, replace the PCV valve.
4. REMOVE CLEAN HOSE FROM PCV VALVE.
5. REINSTALL PCV VALVE.