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Home >> Mitsubishi >> 2014 >> Lancer SE >> Repair and Diagnosis >> External Pages >> Different car >> Section 54 (Adaptive Cruise Control System (Acc) & Emission Control (MFI) - With Diagnostics) >> Emission Control (MFI) >> Positive Crankcase Ventilation System >> General Information (Positive Crankcase Ventilation System) >> Positive Crankcase Ventilation (PCV) System Check

Positive Crankcase Ventilation (PCV) System Check

WARNING: This page is about a different car, the 2014 Mitsubishi Outlander. However, it is still accessible from the selected car via links, so may be relevant.
  1. Remove the ventilation hose from the positive crankcase ventilation (PCV) valve.
  2. Remove the PCV valve from the rocker cover.
  3. Reinstall the PCV valve at the ventilation hose.
  4. Start the engine and run at idle.
  5. 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.
  6. If vacuum is not felt, clean the PCV valve or replace it.
  7. 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 Nm (22 ± 3 in-lb) 

    Fig 1: Testing Positive Crankcase Ventilation Valve
    G09664834Courtesy of MITSUBISHI MOTOR SALES OF AMERICA.
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