- Use only unleaded fuel.
- Avoid prolonged idling; the engine should run no longer than 20 minutes
at curb idle and no longer than 10 minutes at fast idle.
- Do not disconnect any of the spark plug leads while the engine is running.
If any engine testing procedure requires disconnecting or bypassing a control
component, perform the procedure as quickly as possible. A misfiring engine
can overheat the catalyst and damage the oxygen sensor.
- Make engine compression checks as quickly as possible.
- Whenever under the vehicle or around the catalytic converter, remember that
it has a very high outside or skin temperature. During operation, the catalyst
must reach very high temperatures to work efficiently. Be very wary of burns,
even after the engine has been shut off for a while. Additionally, because
of the heat, never park the vehicle on or over flammable materials, particularly
dry grass or leaves. Inspect the heat shields frequently and correct any bends
or damage.
- In the unlikely event that the catalyst must be replaced, DO NOT dispose
of the old one where anything containing grease, gas or oil can come in contact
with it. The catalytic action with these substances will result in heat which
may start a fire.