Catalytic Converter: Testing and Inspection

1. Visually inspect exterior of converters. If severe damage is noted, such a dented, crushed or rusted out shell, replace converter.
2. Whenever a converter is removed from vehicle, check ceramic element through exhaust inlet and outlet. If element is clogged, melted or otherwise damaged, replace converter.
3. If a converter is suspected of being restricted, measure exhaust backpressure.