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Areas of the cooling system to check for leaks

Areas of the cooling system to check for leaks Thermostat housing Water pump Hose connection Radiator Catch tank Core plugs

Check the core plugs in the side of the cylinder block. Check all hose connections for tightness, but ensure that the clips are not cutting into the

rubber. Look along the hose for cracks, especially at points where the hose is flexed by engine movement.

Inspect the radiator seams for splits, also the catch tank and its pipe. Watch for leaks at the water-pump bearings and from the pump gasket.

Check the thermostat housing for cracks, and the housing gasket for leaks.

Explained in

    Checking for coolant leaks

    A leak in the water-cooling system can be hard to trace - especially if it is internal, say in the cylinder-head gasket between cylinders. Read more