What Causes a Clogged Catalytic Converter?

Illustration of a clogged catalytic converter with arrows pointing to areas affected by unburned fuel, oil, and coolant buildup.

When your vehicle starts to lose power, struggle with acceleration, or shows a decline in fuel efficiency, a clogged catalytic converter might be to blame. But what causes a clogged catalytic converter? Understanding the underlying factors can help you prevent this common issue and maintain your vehicle’s performance. 1. Unburned Fuel in the Exhaust System One of the most common …

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