What are the causes of car water pump failure?

1 Answers
Doreen
07/29/25 5:19pm
Car water pump failure causes: 1. Coolant leakage caused by aging water pump seals; 2. Over-tightened engine serpentine belt leading to premature wear; 3. Exceeding service life without replacement; 4. Bent pump shaft, worn shaft neck, or damaged threaded end; 5. Broken impeller blades or worn shaft bore; 6. Wear degree of water seals and bakelite washers; 7. Poor pump performance causing circulation issues that generate high temperatures, leading to leaks or broken blades; 8. Long-term antifreeze neglect causing internal corrosion that ultimately damages the pump.
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