The function of a car Radiator is to cool the engine by circulating liquid coolant through the engine.

As coolant circulates into the engine block, it is heated up and goes back into the radiator where it loses heat to the atmosphere, and back into the engine again.  This movement involves a Water Pump to draw the liquid coolant out for circulation through the engine, as a well as a fan to generate air through the radiator.

A leaking Radiator runs the risk of an over-heated engine which can lead to a blown head gasket or even a cracked engine block. The leaks may come from the hoses, pipes or the Radiator Tanks. Look out for signs of a leaking Radiator.

The most obvious sign will be leaking coolant found below the car. Check if the temperature gauge reflects the red zone which indicates an over-heated engine. Conduct a visual check on the radiator and around the engine for marks left behind by coolant which has been boiled off, leaving rust marks.

Regularly check for coolant levels in the car. Any rapid reduction of coolant levels should raise an alarm. White exhaust smoke may also be produced as a result of leaking coolant getting burnt in the engine and expelled through the exhaust pipe.

If visual signs are absent, make an attempt to check on the Thermostat.

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