Symptoms
|
Possible Causes
|
Remedy
|
Coolant leakage
|
| • |
From the bleed hole of
the water pump |
|
Visually check
|
| • |
Check leaks after about
ten-minute warming up. |
|
| • |
If coolant still leaks,
replace a water pump. |
|
| • |
If leakage stops, reuse
the water pump (Do not replace the pump with a new one). |
|
|
|
| • |
Check the tightening
of the water pump mounting bolts. |
|
| • |
Retighten the mounting
bolts. |
|
| • |
Check damage of gaskets
or inflow of dust. |
|
| • |
Replace the gasket and
clean dust off. |
|
| • |
From outer surface of
water pump |
|
| • |
Check the material or
any cracks of the water pump. |
|
| • |
Poor material. If any
crack found, replace the water pump. |
|
Noise
|
|
Inspection with a stethoscope
|
| • |
After starting the engine,
check noise with a stethoscope. |
|
| • |
If there is no noise,
reuse the water pump (do not replace it). |
|
| • |
If there is any noise
from the water pump, remove the drive belt and recheck. |
|
Inspection after removing a drive belt
|
| • |
After removing a water
pump and a drive belt, check noise again. |
|
| • |
If there is noise, reuse
the water pump. Check other drive line parts. |
|
| • |
If there is no noise,
replace the water pump with a new one. |
|
Inspection after removing a water pump
|
| • |
After removing a water
pump and a drive belt, check noise again. |
|
| • |
If there is any interference
between them, replace the water pump with a new one. |
|
Overheating
|
|
Loosened impeller
|
| • |
Corrosion of the impeller
wing |
|
| • |
Poor coolant quality
/ Maintenance check |
|
| • |
Impeller seperation from
the shaft |
|
| • |
Replace the water pump. |
|
See also:
Replacement
1.
Disconnect the negative (-) battery
terminal.
2.
Loosen the mounting screw and
then remove the crash pad lower cover (A).
3.
Remove the eva ...
Installation
1.
Install the smart junction box.
2.
Install the crash pad lower panel.
3.
Check that all system operates
normally.
...
Cylinder Head. Repair procedures
...
Kia Optima: Troubleshooting
