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Causes of Carbon Deposits in the Combustion Chamber

11 April 2025
Kerak Karbon

Do you already know the reasons why engine performance can decline? The cause is the accumulation of carbon deposits in the combustion chamber. In addition to decreasing engine performance, this can also lead to increased fuel consumption and frequent occurrences of pinging or knocking.

If this accumulation of deposits is left unchecked, it could damage other engine components. Of course, before these negative effects worsen, you need to address the issue of the buildup. To prevent this buildup from happening to you, you should know what causes it.

Find Out the Causes of Carbon Deposits in Vehicle Engines

The risk of carbon deposit buildup is not a new issue. In fact, it is very common. The use of fuel is the main factor that can lead to engine deposit buildup. The appearance of these deposits can occur due to insufficient air supply in the combustion chamber.

Read Also:  What is Carbon Tax and Its Effect on Car Selling Price?

Additionally, it can also occur due to the use of inappropriate fuel or fuel of poor quality. The causes of these deposits can be influenced by several factors. Know what these causes are below.

1. Due to Residue from the Combustion Process

An imperfect combustion process can also be a cause of carbon deposits in the combustion chamber. This generally occurs due to the poor quality of fuel. As a result, the combustion process does not run perfectly, leading to the accumulation of deposits in the combustion chamber.

Residue from the imperfect combustion process can also occur after the engine has been running and then stops. There may be some fuel that enters the combustion chamber, while no ignition and combustion occur in the chamber. As a result, the unburned fuel will turn into carbon.

2. Deposits of Dust and Engine Oil Vapor

Deposits of dust and engine oil vapor play a role in the accumulation of carbon deposits. This buildup can come from the intake valve suction. Dust and engine oil can enter and settle, making the combustion chamber dirty. The presence of paraffin and sulfur elements entering the engine's combustion chamber also contributes to the buildup of deposits.

In addition to oil vapor, engine oil can also escape and enter the combustion chamber. This oil can enter through gaps in the piston rings or as a result of blow-by, causing carbon buildup. Engine oil contains large molecules and a higher boiling point compared to gasoline. If there are many unburned portions, it leads to carbon deposits.

3. Frequent Operation of the Engine at Low Speed with Low Load

Engines that often operate at low speeds and low loads can cause the engine to run below optimal temperatures. This results in combustion failure of gasoline that adheres to the piston head and combustion chamber. These areas have low temperatures due to cooling from the cooling system.

These are some of the causes of carbon deposits that can occur in your vehicle. If not addressed promptly, a decline in engine performance may occur. Of course, you wouldn't want this to happen to you, right? Therefore, be diligent in maintaining your vehicle's engine components.

This review hopefully can be beneficial for you. If you want to get updated and interesting information about automotive, just visit the Daihatsu website. Hopefully, this information can be useful for you!

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