Why don't old cars recommend cleaning up carbon deposits?

After driving for a long time, it is found that the valve of the car is likely to accumulate carbon because of slow speed increase, quick refueling and quick tempering, and difficult cold start. It is found that there is no idle speed when the idle speed is low, the card is issued by stepping on the accelerator, and the battery is changed, so the carbon deposition in the intake pipe of the car is very serious.

Extended data:

The main component of carbon deposition is impurities in gasoline, so the carbon deposition tendency of high cleanliness gasoline is weak. But it should be noted that high grade is not equal to high quality. Grade only represents the octane number of gasoline, not the quality and cleanliness.

Choosing a real gasoline cleaner is helpful to remove the carbon deposits in the engine, effectively prevent the formation of carbon on the metal surface, and gradually activate and remove the original carbon deposits, thus protecting the engine from damage.

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