Important: Oil in the charged air cooler, hoses, turbocharger, or intake manifolds is normal with a closed crankcase ventilation system.

The maximum crankcase pressure is 4 kPa or 16 in of water at 3,100 RPM measured at the oil level indicator tube.

PVC check valve stuck closed

Odors

Normal situation

Noise

Cracked hoses

Smoke

Damaged PCV diaphragm

Excessive Oil Consumption

Damaged PCV diaphragm, missing or broken spring