Crankcase Emission Control System - Subaru LEGACY 2002 Quick Reference Index

Emission Control (Aux. Emission Control Devices)

3. Crankcase Emission Control System

The positive crankcase ventilation (PCV) system prevents air pollution which will be caused by
blow-by gas being emitted from the crankcase.
The system consists of rocker covers with fresh air inlet, connecting hoses, a PCV valve and a
chamber.
(7)
(1) Chamber
(2) Throttle body
(3) Connecting hose
(4) PCV valve
(5) Rocker cover RH
CRANKCASE EMISSION CONTROL SYSTEM
(6)
(6) Crankcase
(7) Rocker cover LH
(8) Spring
(9) Valve
(1)
(2)
(3)
(4)
(5)
EC-6
A
(4)
A: To intake manifold
B: Blow-by gas
B
(9)
(8)
B2H3969B