Location of the crankcase ventilation valve on models with a 4-cylinder engine
The valve is located on the cover of the valve mechanism.
1. Start and warm up the engine.
2. Remove the valve from the valve cover. Close the valve with your finger. If there is no vacuum, check if the hose, the hole in the intake manifold or the valve itself is not clogged.
3. Stop the engine. Shake the valve. You should hear the click of the plunger inside the valve. If not, replace the valve.