Catalytic Converter: Service Precautions

If a large amount of unburned fuel flows into the three way catalyst, the three way catalyst temperature will be excessively high. To prevent this, follow the procedure below:
1. Use unleaded gasoline only. Leaded gasoline will seriously damage the three way catalyst.
2. When checking for ignition spark or measuring engine compression, make tests quickly and only when necessary.
3. Do not run engine when the fuel tank level is low, otherwise the engine may misfire causing damage to the three way catalyst.
4. Do not place the vehicle on inflammable material. Keep inflammable material oft the exhaust pipe.