Therefore, a bad catalytic converter will most often cause a higher fuel consumption, even if lower is possible in some cases. 4. Smell of sulfur. When the catalytic converter is clogged, it will restrict the airflow of exhaust fumes so that the engine’s air-fuel mixture will get rich (too much fuel, leading to unburnt fuel)
In your vehicle’s fuel, there is a substance called sulfur that turns into hydrogen sulfide when your engine is in use. When your catalytic converter is functioning properly, it converts this substance into sulfur dioxide which is odorless. That’s why if you smell rotten eggs, you know that something is not working as it is supposed to be.
How to Fix a Catalytic Converter (Without Replacing It)
Contents
Bad Smell Coming Out from the Exhaust. Fuel contains many sulfur particles that convert to hydrogen sulfide during combustion. The stinky sulfide is meant to be converted into odorless sulfur dioxide by a catalytic converter. It does not occur if the system is faulty or clogged.
People Also Ask why is sulfur bad for catalytic converter
What does it mean when your catalytic converter smells like sulfur?
A sulfur or "rotten egg" smell indicates the formation of hydrogen sulfide (H 2 S), a likely sign of catalytic converter contamination. Ammonia (NH 3) odor may also indicate poor catalyst function. If the catalytic converter’s housing is discolored or warped, there may be internal leakage or overheating.
What happens when a catalytic converter goes bad?
The catalytic converter is part of the exhaust system, processing all exhaust leaving the engine before it can escape into the atmosphere. A bad or clogged catalytic converter can ultimately lead to engine failure, so it’s important to address the issue promptly.
What are the most common catalytic converter problem indicators?
An illuminated check engine light or malfunction indicator lamp (CEL or MIL) with a catalytic converter diagnostic trouble code (DTC) is the most common catalytic converter problem indicator.
What does a catalytic converter do?
Benjamin Jerew is an ASE-certified Master Automobile Technician with over a decade of experience in auto repair, maintenance, and diagnosis. The catalytic converter is part of the exhaust system, processing all exhaust leaving the engine before it can escape into the atmosphere.
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