Positive Crankcase Ventilation (PCV) System Check
- Remove the ventilation hose from the positive crankcase ventilation (PCV) valve.
- Remove the PCV valve from the rocker cover.
- Reinstall the PCV valve at the ventilation hose.
- Start the engine and run at idle.
- Place a finger at the opening of the PCV valve and check that vacuum of the intake manifold is felt.NOTE: At this moment, the plunger in the PCV valve moves back and forth.
- If vacuum is not felt, clean the PCV valve or replace it.
- Apply a small amount of new engine oil to the O-ring on the PCV valve, and tighten to the specified torque.
Specified torque: 2.5 ± 0.4 N.m (22 ± 3 in-lb)
- Remove the ventilation hose from the positive crankcase ventilation (PCV) valve.
- Remove the PCV valve from the rocker cover.
- Hold the PCV valve with the vacuum side down. Insert a thin rod, and using light pressure, depress the end of the PCV valve spring by 5 - 10 mm (0.2 - 0.3 inch). Release pressure on the rod to see if the PCV valve spring will lift the rod to its original position.
- If the rod returns quickly to its original position, the PCV valve is OK. If the stick does not return quickly, clean or replace the PCV valve.
- Apply a small amount of new engine oil to the O-ring on the PCV valve, and tighten to the specified torque.
Specified torque: 2.5 ± 0.4 N.m (22 ± 3 in-lb)