What are the reasons for the constant water shortage in the BMW 320i radiator?

[ElliotLee]

Here are the reasons for the constant water shortage in the BMW 320i radiator: 1. Reasons: Leaking water pipe joints or the pipes themselves, replace the pipes or reinforce the seals; Cracks in the cylinder block, loose or damaged cylinder head gasket causing water leakage; Damaged seals or sand holes in the oil cooler leading to water leakage; Loose radiator cap; Leaking heater core or leaking three-way valve. After the radiator boils, the engine's heat dissipation is poor, the temperature is too high, and the expansion of parts will reduce the clearance between components. On the other hand, high temperature reduces the viscosity of the engine oil. In this case, the wear of components intensifies. If not handled properly immediately, the engine may burn out, leading to serious mechanical damage accidents. 2. Judgment: Check if the exhaust pipe emits white smoke. If it does, it indicates water burning, which may be due to cracks in the cylinder block or a loose or damaged cylinder head gasket. If there are cracks in the cylinder block: The radiator will emit steam upwards, but it hasn't boiled over. A loose or damaged cylinder head gasket will cause insufficient power in the car.