How to judge that the engine has carbon deposits and the symptoms of excessive carbon deposits in the engine

After the accumulation of time, the common problem of carbon deposit as an engine is almost everywhere, and many car owners are also very troubled by this. However, many car owners, Xiaobai, do not understand how the car's carbon deposits are generated, let alone how to judge whether the engine has carbon deposits. In fact, the symptoms of excessive engine carbon deposits can easily make the car owner mistakenly believe that the vehicle has other problems.

About engine carbon deposits

The cause of engine carbon deposits is very simple, that is, a kind of coke-like substance produced by unsaturated olefins and gums in the fuel at high temperatures. The easy-to-understand explanation is: engine carbon deposits are a kind of colloidal substance produced by incomplete combustion of fuel.

How to judge that the engine has carbon deposits

Under normal circumstances, when the engine has the following phenomena, it is most likely that there is carbon accumulation inside the engineNS:

Engine jitter:When the engine is idling, it emits intermittent and regular jitter.

Unsteady engine idling:When the engine is idling, the speed is unstable, high and low.

Symptoms of engine carbon deposits

The above-mentioned engine jitter and idle speed instability are only the most obvious and common symptoms when the engine has carbon deposits, and their impact on the normal operating conditions of the engine is relatively small. Once the carbon deposits are severely accumulated, the normal work of the engine will be greatly affected. details as follows:

Engine acceleration is weak:When the accumulation of carbon deposits is serious, the engine will appear acceleration, slowness, and other phenomena. At the same time, it will also be accompanied by problems such as abnormal engine jitter and increased fuel consumption.

Engine knock:When the engine's carbon deposits accumulate too much in the combustion chamber, the compression ratio of the engine cylinder will be increased invisibly, and this may lead to the pre-combustion of the mixed gas and the deflagration phenomenon.

Cylinder strain:If carbon deposits accumulate to the piston ring, or the carbon deposits at the cylinder head and valve drop to the piston ring, it will cause strain on the engine cylinder, and even "cylinder holding" phenomenon may even occur in severe cases.