[Flower Pepper Car Maintenance] Carbon accumulates in Mercedes-Benz cylinders and is troublesome to clean up–Try dry ice cleaning_vehicles, vehicles

[Flower Pepper Car Maintenance] Carbon accumulates in Mercedes-Benz cylinders and is troublesome to clean up–Try dry ice cleaning

September 15, 2024

The sharing of some vehicle repair and maintenance cases is updated irregularly. Let more people understand some tips in daily car use, maintenance, and testing. Use cars to understand cars better!

A series of reactions such as engine shaking and inability to step on oil are all closely related to carbon deposits in the engine. The places in the cylinder (combustion chamber), intake port, and intake valve are places where carbon deposits are prone to accumulate.

It is difficult for us to see carbon deposits in the cylinder (combustion chamber) without tools, so an endoscope is usually used here to mirror the internal situation. Oh, by the way, adding a small lens to the speculum can also be used to observe whether there are scratches and strains on the cylinder wall (it can easily occur when there is too much carbon deposition).

You can clearly see the mirror image given by the uncleaned looking glass on the previous picture. There is a piece of carbon deposit (black).
This picture is a mirror image (white) given after dry ice cleaning. Not much to say, the effect bears witness。

Although this set of machines (dry ice cleaning machines) may not seem big, the price is really expensive (expensive, expensive, expensive three times). It is said that it is made of some special material.

There are only a few switches in total, the main power switch–high-pressure gas switch A–dry ice switch B

A special storage box for dry ice. I really know that the price of this small box is more than 3K. Dry ice will volatilize and explode if it is not stored well (please check your own Baidu for details).

The automotive industry generally uses this small three-millimeter granular dry ice

After adding dry ice, turn on machine switch A+B and cleaning begins.

Open the ignition coil, spark plug, and reach in along the spark plug hole.

Slow work leads to detailed work. Clean the cylinder one by one, and finally inspect it. If a cylinder is not completely cleaned, just carry out the second cleaning.