CARBON REMOVING
It is necessary to remove the carbon deposits from the combustion chambers and piston heads at frequent intervals in order to maintain an economical and efficient motor.
There are various methods and ways of doing this without removing the casting or cylinder head; that is, providing regular attention is given to prevent the deposit from baking and forming in a shale which can be removed only by burning or scraping.
There are a number of carbon removing compounds on the market which give excellent satisfaction, although some of these compounds may prove very harmful unless the directions are followed very carefully.
A great many owners use kerosene once or twice a month. An ounce or two may be poured into each cylinder while they are quite warm and allowed to stand for several hours. The motor is then turned over a few times which allows the kerosene to escape through the valves. The particles of carbon are blown out through the muffler when the motor is started. Others prefer to feed it into the motor through the carburetor. This is done by speeding up the motor and feeding a little at a time into the float chamber or air valve. Others use chloroform, turpentine, and alcohol in the same way.
The latest method is to take the car to a garage and have the carbon burnt out occasionally with a carbon dioxide flame. This vaporizes and consumes the carbon and blows it out in the form of soot. The flame of an acetylene welding outfit may be used successfully. Great care must be taken to prevent fire. The carburetor is removed and the fuel line drained and tied out of range of the flame.