Withdrawal
1. Disconnect the hose from the positive crankcase ventilation valve. Remove the valve from the cylinder head cover and connect it to the crankcase ventilation hose.
2. Start the engine at idle speed, close the valve opening with your finger and make sure that you can feel the vacuum created in the intake manifold.
Note. In this case, the valve plunger must reciprocate.
3. If vacuum is not felt, clean or replace crankcase breather valve and hose.
Examination
1. Remove the positive crankcase ventilation valve.
2. To check plug movement, insert a thin steel rod from the threaded side of the valve.
3. If the plunger does not move, the valve is clogged and needs to be cleaned or replaced.
Scheme of the system for reducing the toxicity of exhaust gases and trapping fuel vapors of cars without an on-board diagnostics system
Installation
Install the crankcase ventilation valve and tighten to specified torque.
Tightening torque: 8–12 Nm.