1B-2 Emission Control Devices:
Crankcase Emission Control System Description
B718H11201002
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.
1
2
3
“A”
“B”
“C”
“D”
I718H1120038-04
1. Air cleaner box 3. Oil return “B”: Fuel/Air mixture “D”: Engine oil
2. Oil breather separator “A”: Fresh air “C”: Blow-by gas
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