1. Start the engine and warm it up to normal operating temperature. |
2. Leave the engine to work with the idle speed. |
3. Disconnect the hose from the crankcase ventilation cylinder head cover. |
4. Use your finger to close the crankcase breather hose. |
5. Make sure that the vacuum hose is felt. |
6. Remove the crankcase ventilation valve. |
7. Purge valve at side A, while the B-side should be air. |
| 8. Purge valve B-side, while the A-side must not be air. |
9. If necessary, replace the valve. |