OVERHEATING TROUBLES.

Auckland Star, Volume LXVIII, Issue 3, 5 January 1937, Page 14

OVERHEATING TROUBLES.

RADIATOR EXAMINATIONS. \ Although the modern cpr engine is not as a rule prone to overheating, it not infrequently happens that owners who have kept their cars for several years find that the cooling- properties of the radiation system seem to deteriorate from year to year. One is apt to suspect that the trouble is caused by the formation of deposit in the radiator water spaces and in the cylinder water jackets themselves. This, doubtless, often accounts for less efficient cooling, and the trouble is one upon which it is worth while to consult an experienced garage. On the other hand, the loss of cooling properties is frequently due to another cause, the removal Sf which is a very simple matter. Most private car owners know that the radiator is connected to the cylinder block by two pieces of rubber hpse piping. This hose usually consists of a thick fabric casing, of which the inner surface is covered with a layer of rubber. In course of time the rubber perishes, and strips of it become detached from the fabric casing. Sometimes tliey come. away bodily, and either lie in the water passage in the hose or find their way into the connections between the hose and cylinder jacket. Sometimes, however, onlv one end and both sides of a strip will break away so that it is supported from one end and tends to curl up and block half the effective diameter of the pipe. It is probable that no symptoms of this process of distintegration will be apparent at the outside of the hose pipe, though in due course the pipe will feel very soft to the touch. Obviously, the remedy is to renew the old hose pipe with a new length. At any rate, if the cooling of the engine seems to be less satisfactory than it used to be, it is worth while taking off the rubber water connections and examining them before contemplating any more drastic action. .Investigation on the lines suggested should be one of the routine jobs in preparing the machine for the road after the winter.