Emission Control Devices: 1B-2
Crankcase Emission Control System Description
B815H21201002
The engine is equipped with a PCV system to prevent discharging crankcase emissions into the atmosphere. Blow-by
gas in the engine is constantly drawn into the crankcase, which is returned to the combustion chamber through the
PCV (breather) hose, air cleaner and throttle body.
“C”
“D”
“A”
“B”
1
3
2
I815H1120002-01
1. Air cleaner box 3. PCV (breather) hose “B”: Fuel/Air mixture “D”: Exhaust gas
2. PCV (breather) reed valve “A”: Fresh air “C”: Blow-by gas
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