1. Engine temperature is too high: the function of water cooling system is to reduce the engine temperature. If the water cooling system is damaged, the engine can't dissipate heat normally, resulting in excessive engine temperature. Long-term high-temperature operation will damage engine parts and affect engine life.
2. Performance degradation: After the water cooling system is damaged, the engine can't work normally, which will lead to vehicle performance degradation, such as reduced power and increased fuel consumption.