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In this video, we will look for answers to questions such as why does the radiator hose harden? Why does the radiator hose swell? To reach me: [email protected] The radiator hose is the pipe through which water passes between the engine and the radiator. This hose is made of sturdy and thick rubber material. When you check this hose after turning on the radiator fan, it should be slightly soft. However, if you squeeze the hose with your finger and it is hard as a rock and does not enter, this is a sign of pressure in the cooling system. The reasons for the swelling and hardening of the radiator hose are as follows. 1- Circulation pump failure 2- Thermostat failure 3- Fan sensor failure 4- Fan motor failure 5- No antifreeze in the engine water 6- Burned upper cover gasket 7- Crack in the engine block or upper cover 8- Clogged radiator #Failure #Radiator #Car #Information #Engine #heat