Check the radiator for bent, broken or plugged fins.

Check the radiator for corrosion, damage, rust or scale.

Check the radiator hoses for cracks, damage or deterioration.

Check the reservoir tank for damage.

Check the radiator cap spring for damage.

Test the pressure of the cap using a cooling system checker.

Check the radiator cap seal for cracks or damage.

Check that the radiator fan rotates when the battery voltage is applied to the terminals.

Check that abnormal noises are not produced while the motor is turning.