1. |
After disconnecting the vapor hose from the
PCV valve, remove the PCV valve. |
2. |
Reconnect the PCV valve to the vapor
hose. |
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.
The plunger inside the PCV valve will
move back and forth at
vacuum. |

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