Crankcase ventilation valve
1. Side facing the cylinder head
2. Clean hose
The valve is located on the cover of the valve mechanism.
1. Start and warm up the engine.
2. Close the valve with your finger. If there is no vacuum, check for a blockage in the hose, intake manifold or valve itself.
3. Stop the engine.
4. Disconnect the valve from the hose and blow through the valve from the side with which it is installed in the cylinder head. Check that air passes through the valve.
5. If air does not pass in this direction, replace the valve.