1977 Volvo 262 264 265
through channels in the insert. The channel walls are covered by a thin layer of platina-palladium. These
metals act as catalysts, permitting a chemical action to occur without actually taking part in it.
The CO content will increase if the Catalytic Converter is damaged.
pg. 55 Emission control systems
NOTE:
Vehicles with Catalytic Converter must use unleaded fuel only. Otherwise the Catalytic Converter will
be destroyed.
Torque Catalytic Converter mounting bolts (certain models)
The Catalytic Converter mounting bolts should be torqued every 15,000 miles.
VI Engine Evaporative Emissions
Evaporative Control Systems
Vehicles intended for the North American market are equipped with a gas evaporative control system,
which prevents gas fumes from being released into the atmosphere.
The system consists of an expansion tank in the fuel tank, a check valve at the fuel tank and a charcoal
filter in the engine compartment.
The components are interconnected by hoses which channel fuel fumes from the gas tank to the charcoal
filter where they are stored until the engine is started and then drawn into the engine fuel induction
system.
Evaporative Control Canister
Replace the canister every 45,000 miles.
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