Honda 1993 Civic Coupe Owner's Manual page 182

The Three-way Catalytic Converter
contains platinum and rhodium.
These metals serve as catalysts,
promoting chemical reactions to
convert the exhaust gasses
without affecting the metals. The
catalytic converter is referred to
as a three-way catalyst, since it
acts on HC, CO, and NOx. A re-
placement unit must be an original
Honda part or its equivalent.
The Three-way Catalytic Converter
must operate at a high
temperature for the chemical
reactions to take place. It can set
on fire any combustible materials
that come near it. Park your car
away from high grass, dry leaves,
or other flammables.
THREE-WAY CATALYTIC CONVERTER
A defective catalytic converter
contributes to air pollution, and
can impair your engine's
performance. Follow these,
guidelines to protect your car's
Three-way Catalytic Converter.
Three-way Catalytic Converter
Always use unleaded gasoline.
Even a small amount of leaded
gasoline can contaminate the
catalyst metals, making the
converter ineffective.
Keep the engine tuned-up.
Have your car diagnosed and
repaired if it is misfiring, back-
firing, continuing to run after
you turn off the engine,
stalling, or otherwise not
running properly.
Technical Information