Connecticut western news., 1919-04-03

[ operation.
 fuel. unless more volatile fuel Is used for prlming. A very satisfactory way to apply heat is to put some hot water into the cooling system, thus warming the cylinders and assisting In vaporlz- ing the gasoline that is drawn in with the charge or injected as primlng Tn this case, also, the engine should be allowed to stand few minutes to per init the gasoline to vaporize. It is not necessary that the entire cooling sys- tenn be filled with hot water; if enough is used to heat the cylinders so the engine will start. cold water may then, be added until tho radiator Is full. This method, of course, will be practicable only with small or me dium-sized engines; with some of the larger sizes of tractors the amount of hot water usually available will have little effect used in this way.
 If only a little hot water Is avail able, 1t may be more effective if poured slowly over the intake manifold. and the carburetor as well, if the carbu- ,retor is covered so no water can enter it. A very effective way of heating the intake manifold Is to wrap cloth around 1t and pour the hot water over the cloth, or dip the cloth in hot water and then wrap 1t around the manifold.
 If the manifold can be heated 1t will warm the air that touches it as 1t en- ters the engine; this warm air will cause the gasoline spray which it car .AA A~ &nvr portion of the air passing through - small pipe comes in contact with the walls of the pipe than In the case Of a large one, this method works best with engines having a comparatively small manifold. When depending upon heat from the manifold to warm the air, the engine should be cranked fair ly rapidly, so as not to allow the warmed mixture to remain long In contact with the cold walls of the com buston chamber and so cause the va DOT to condense into liquid again.
 There are frequently occasions when m engine must be started in cold weather under conditions where hot water cannot be obtained, and in such cases some other means of applying heat must be used. Some people make use of a blowtorch to apply the heat to the intake manifold, or, by removing a spark plug or igniter block, heat the combustion chamber itself.
 Open Flame Not Favored.
 The use of an open flame around n gas engine at ordinary temperatures Is not to be recommended, on account of the possibility of fire. It always in- troduces an element of danger.
 One of the most effective methods of starting a cold engine, and one ab- solutely safe, is to remove the spark plug Cor igniter block) and heat it In a fire or in the flame of \ blowtorch, prime the engine, md then quickly re- place the spark plug. The charge Is almost sure to ignite. A drop or two of gasoline put on the inside of the plug just before replacing it insures the presence of vaporized fuel near the spark when the engine Is cranked.
 Where. for any reason, it Is lmprac- ticable or inadyisnble to apply heat in my of the ways indicated, 1t may be possible to heat piece of metal pipe the size of the air intake of the car bureter then place this so all the air entering the carbureter must pass through it. This Is nearly as effective ms a heated manifold. Such q pipe may be made red-hot If desired.
 Provide Volatile Fuel.
 Another means Of starting engines in cold weather, which is practiced to considerable extent. is to provide some very volatile fuel with which to prime 1t, ether or "high-tcst" gasoline being perhaps most commonly used. As these will vaporize ut lower temper atures than ordinary commercial gas- Oline, they make 1t easier to obtain n combustible mixture. In using ether, care must be exercised not to uae too muc., as dangerous pressures may be created because of the rupidlty with which 1t burns. Tn many cases it Is mixed with about equal parts of gaso- line. There is no danger in the use of the high-test gasoline. Ii is not quite so effective as ether. because it is less volatile, but it is being used with en- tire satisfaction by a great many en- pina aunarc