PCV 3 - Evaporative Emission System Check

NOTE: If the evaporative hose is not connected to the PCV system, follow the "No" diagnostic path.

^ Disconnect evaporative hose at connection to PCV hose (if equipped). Cap the connector and retest.

^ Place a stiff piece of paper over the hose/nipple, as in PCV2. Wait one minute.

^ Does vacuum hold the paper in place?

YES -- Go to evaporative emission systems. Symptom Related Diagnostic Procedures

NO -- Check for vacuum leaks/obstruction in the system (ex. oil cap, PCV valve, hoses, cut grommets, oil separator, rocker cover bolt torque/gasket leak). Service as necessary.