What Causes a Car Water Pump to Fail?

1 Answers
MaverickMarie
07/29/25 5:56pm
Car water pump failure can be attributed to the following reasons: 1. Coolant leakage leading to aging of the water pump's sealing ring; 2. Over-tightening of the engine accessory belt causing premature wear of the water pump; 3. Exceeding the water pump's service life without timely replacement; 4. Bending of the water pump shaft, wear of the shaft journal, or damage to the shaft end threads; 5. Broken blades on the impeller or wear of the shaft bore; 6. Excessive wear of the water seal and bakelite gasket; 7. Poor-quality water pumps resulting in inadequate circulation, leading to overheating, leakage, or broken blades, which in turn causes premature failure; 8. Failure to replace antifreeze for an extended period, leading to internal corrosion and water pump damage.
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