Kia Optima: Repair procedures
Inspection
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1. |
After disconnecting the vapor hose from the PCV valve,
remove the PCV valve. Visually check for a collapsed vapor hose or hose
leaks. |
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2. |
Reconnect the PCV valve to the vapor hose. |
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3. |
Run the engine at idle, then put a finger over the
open end of the PCV valve and make sure that intake manifold vacuum
can be felt.
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The plunger inside the PCV valve will move
back and forth at vacuum. |

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4. |
If the vacuum is not felt inspect PCV operation,
if operating correctly clean or replace the vapor hose. |