Positive Crankcase Ventilation (PCV) System - Non Turbo: Notes
DESCRIPTION
The Positive Crankcase Ventilation (PCV) System includes the following components:
| 1. | INTAKE MANIFOLD |
| 2. | PCV TUBE (DIRTY AIR TUBE) |
| 3. | PCV VALVE |
| 4. | MAKE-UP AIR (MUA) OIL SEPARATOR (PART OF VALVE COVER) |
| 5. | MAKE-UP AIR (MUA) TUBE (FRESH AIR TUBE) |
OPERATION
There are two sides to the Positive Crankcase Ventilation (PCV) system. The dirty side of the system consists of the PCV Valve, installed on the Valve Cover Oil Separator, and the PCV Tube that connects between the PCV Valve and Intake Manifold. The clean air side of the system consists of the Make-Up Air (MUA) Tube that connects between the MUA Oil Separator in the Valve Cover and the Fresh Air Hose, and Crankcase Pressure Sensor.
NATURALLY ASPIRATED OPERATION
When the engine is running Naturally Aspirated, clean air flows from the Fresh Air Hose, through the MUA Tube and MUA Oil Separator, to the crankcase. The crankcase vapors are pushed into the other Oil Separator in the Valve Cover. Engine vacuum draws the vapors into the Intake Manifold through the PCV Valve and PCV Tube where they are burned.