Do Diesel Engines Have Catalytic Converters?

Explore further information about the catalytic converter of your diesel vehicle on our blog. Numerous diesel engines are equipped with a catalytic converter, thus if you are curious about whether your diesel engine possesses one, the concise response is affirmative. The incidence of catalytic converter theft in Canada is increasing, which is why discussions regarding them occur frequently in various circles.

What is a Catalytic Converter?

A catalytic converter is a part of your vehicle’s exhaust system. They are designed to reduce airborne pollutants in order to reduce dangerous emissions from vehicles. Catalytic converters were originally designed for gasoline engines in the 1970s, but they started being installed in diesel engines as well.

Catalytic converters play a crucial role in promoting the well-being of both humans and the environment. Essentially, these converters transform detrimental pollutants and poisons, such as carbon monoxide, nitrogen oxides, and hydrocarbons, into carbon dioxide and water. As a result, they significantly diminish the negative effects of these emissions by more than 90%.

Do All Diesel Engines Have Catalytic Converters?

You will not have a catalytic converter, however, if your diesel vehicle was made before the 1990s. Almost all diesel engines made after the year 2000 will have a catalytic converter to reduce toxic emissions from the vehicle. Diesel engines are requested to meet non-toxic emissions standards because of this. Whether your diesel engine has a catalytic converter or not depends predominantly on the year of your model.

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How Do Diesel Catalytic Converters Work?

Catalytic converters in diesel engines also have attached particulate filters to eliminate any particular matter that comes from diesel engines. One primary difference between catalytic converters in gasoline and diesel engines is that diesel catalysts do not use rhodium, but instead usually use platinum and palladium, which are precious metals coated on ceramic blocks. These ceramic blocks, which are contained within the metal casing of the diesel catalytic converter, catalyze the chemicals that turn harmful gasses into harmless ones and also block the heat. The concept is the same as in gas engine vehicles, where oxygen is introduced to neutralize harmful gases, but catalytic converters in diesel engines are different from those in gas engines.


How long do diesel catalytic converters last?

Diesel catalytic converters generally have a lifespan of approximately ten years or more than 160,000 kilometers when driving.

Why are diesel catalytic converters different from gas catalytic converters?

Diesel engines typically run much cooler than gas engines, ensuring that substances that are toxic are neutralized successfully through a different process.

What are signs your catalytic converter is failing?

There are a few reasons why your catalytic converter may fail to begin, such as contamination and physical damage, as well as the build-up of carbon, which can cause overheating and include defective signs.

  • Obscure smoke emanating from the vehicle’s exhaust.
  • The scent of sulfur.
  • Reduced acceleration capability.
  • Sluggish engine functionality.
  • Your motor is experiencing excessive heat.
  • Why are catalytic converters stolen?

    The cost of their discarded metallic materials, converters are being dismantled. Due to the valuable metals contained in them, theft of catalytic converters is increasing.

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    Indicators that your catalytic converter has been stolen:

  • Your warning light for the engine is illuminated.
  • Your motor is producing a highly audible sound.
  • You experience a headache when your windows are open.
  • Decreased low-end power.
  • You’re lacking parts from beneath your automobile.
  • DFC Diesel restores the finest engines available. If you have any questions about your diesel engine, please contact us!

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