What are the symptoms of a failed diesel engine water pump?

[MacEli]

Engine water pump failure may exhibit the following symptoms: 1. Idling issues: The car water pump is connected to the belt to draw cold water from the radiator to cool the engine. If there's a problem with the pump's rotation, it will directly affect the engine's speed. 2. Coolant leakage: Mostly caused by aging of the water pump seal ring. An over-tight engine combination belt can also lead to premature wear of the water pump; failure to replace antifreeze for a long time can cause internal corrosion, ultimately damaging the water pump; the water pump may fail if it exceeds its service life without replacement. 3. Engine noise: Open the hood and start the engine. If you hear a low friction noise, it may indicate damage to the water pump bearing.