Kia Rio: Water pump: Troubleshooting
Water Pump
Symptoms
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Possible Causes
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Remedy
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Coolant leakage
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From the bleed hole of the water pump
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Visually check
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Check leaks after about ten-minute warming up.
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If coolant still leaks, replace a water pump.
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If leakage stops, reuse the water pump (Do not replace
the pump with a new one).
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From gaskets or bolts
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Check the tightening of the water pump mounting bolts.
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Retighten the mounting bolts.
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Check damage of gaskets or inflow of dust.
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Replace the gasket and clean dust off.
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From outer surface of water pump
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Check the material or any cracks of the water pump.
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Poor material. If any crack found, replace the water pump.
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Noise
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From bearings
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From mechanical seals
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Impeller interference
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Inspection with a stethoscope
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After starting the engine, check noise with a stethoscope.
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If there is no noise, reuse the water pump(do not replace
it).
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If there is any noise from the water pump, remove the
drive belt and recheck.
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Inspection after removing a drive belt
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After removing a water pump and a drive belt, check noise
again.
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If there is noise, reuse the water pump. Check other drive
line parts.
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If there is no noise, replace the water pump with a new
one.
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Inspection after removing a water pump
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After removing a water pump and a drive belt, check noise
again.
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If there is any interference between them, replace the
water pump with a new one.
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Overheating
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Damaged impeller
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Loosened impeller
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Loosened impeller
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Corrosion of the impeller wing
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Check engine coolant.
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Poor coolant quality / Maintenance check
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Impeller seperation from the shaft
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Replace the water pump.
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1.
Check each part for cracks, damage or wear, and replace the coolant
pump assembly if necessary.
2.
Check the bearing for damage, abnorma ...
1. Cooling fan & reservoir tank assembly
2. Radiator lower hose
3. Air guard
4. Upper cover
5. Radiator upper hose
6. Filler neck
...
See also:
Operation Principle
In the ISG mode, if the power of an audio system turns
OFF by drawdown while Auto ...
Starter: Circuit Diagram
...
Inspection
1.
Turn the ignition switch OFF.
2.
Disconnect the OCV connector.
3.
Measure resistance between the OCV termina ...
Water pump: Inspection
Radiator: Components