What are the consequences of a clogged catalytic converter?

[Melo]

The consequences of a clogged catalytic converter are as follows: 1. Mild clogging: The specific manifestation of mild clogging is a reduction in the vehicle's exhaust purification capability, but no abnormalities can be detected without professional testing equipment. 2. Moderate clogging: The specific manifestations of moderate clogging include a further reduction in the vehicle's exhaust purification capability, along with increased fuel consumption, decreased engine power, and the possible illumination of the engine fault indicator light. 3. Severe clogging: When the catalytic converter is severely clogged, in addition to the above symptoms, the normal operation of the engine will be greatly affected due to the continuous accumulation of high-temperature exhaust gases that cannot be effectively expelled. This may even lead to engine stalling, and in more severe cases, the exhaust pipe may become red-hot due to high temperatures, potentially causing spontaneous combustion.