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, and put a finger on
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, clean or replace
the vapor
hose. | |