- Are the hoses on the radiator, engine and heating system tight?
- Are the hoses cracked? Bend the hoses with your fingers to see if they are stiff and brittle - if so, replace them.
- Are the hoses securely fastened to the fittings?
- Are the hose clamp tension bolts tight?
- Replace any rusted hose clamps as they may break under full load while driving and coolant may leak out.
- In auto repair shops, the tightness of the cooling system is checked using a special hand-operated air pump and a pressure gauge.
- A special adapter is placed on the expansion tank, which increases the pressure to 1.2 bar.
- If the pressure does not drop within 2 minutes, the cooling system is sealed.
Checking the cooling system for leaks (Renault 19)
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