Kia Optima: Turbo Charger. Repair procedures
On-vehicle Inspection
Turbocharger Diagnostic Flow |
If any problem related with turbocharger, such as lack of engine power, poor acceleration,
abnormal engine noise or oil leaks, may occur, check the turbocharger according
to the procedure as follows.
1. |
Check for assembling of the turbocharger
and the exhaust fitting (or the after treatment).
A. |
Check if a gasket is
installed. |
A. |
Check if mounting bolts
(or nuts) are tightened properly. |
A. |
Check if there is a gas
leak. |
A. |
Check if there is any
damage, such as crack, on the parts. |
If a gas leak occur as a gasket was not installed or mounting bolts (or
nuts) were tightened inadequately, it may cause abnormal engine noise.
If the cause of the problem is detected, retighten the mounting bolts (or
nuts) as the specified torque or replace the gasket or damaged parts with
new ones if necessary.
|
2. |
Check for assembling of the exhaust
manifold and the cylinder head.
A. |
Check if a gasket is
installed. |
B. |
Check if the mounting
bolts (or nuts) are tightened properly. |
C. |
Check if there is a gas
leak. |
If a gas leak occur as a gasket was not installed or mounting bolts (or
nuts) were tightened inadequately, it may cause abnormal engine noise.
If the cause of the problem is detected, retighten the mounting bolts (or
nuts) as the specified torque or install a new gasket if necessary.
|
3. |
Check the turbocharger oil feed
pipe & hose and oil drain pipe & hose.
A. |
Check if a gasket is
installed. |
B. |
Check if the mounting
bolts are tightened properly. |
C. |
Check if the clamps are
positioned in place. |
D. |
Check if the oil pipes
& hoses are damaged (bent, crushed, torn or cracked). |
If a gas leak occur as a gasket was not installed or mounting bolts were
tightened inadequately, it may cause oil leaks.If the oil feed pipe &
hose is damaged, engine oil is not supplied sufficiently to the turbocharger
then it may damage the turbocharger. If the oil drain pipe & hose is damaged
and clogged, engine oil is not drained smoothly then it may cause oil leaks
from the turbocharger.
If the cause of the problem is detected, retighten the mounting bolts (or
nuts) as the specified torque or replace the gasket or damaged parts with
new ones if necessary. |
4. |
Check for oil leaks between center
housing and compressor housing.
A. |
Check if the mounting
bolts are tightened properly. |
B. |
Check if there is an
oil leak. |
If the O-ring (gasket) between the center housing and the compressor housing
is damaged, it may cause oil leaks.If an oil leak is detected, replace
the turbocharger with a new one.
|
5. |
Check the turbocharger actuator.
A. |
Electronic actuator:
Check for movement of the actuator rod when a forced actuator operating
mode is performed by GDS. (Refer to DTC guide)
|
If the turbocharger actuator is damaged, it may cause lack of engine power
and poor acceleration.If the actuator rod does not move, replace the
turbocharger with a new one.
|
6. |
Check the turbocharger compressor
wheel.
A. |
Check if the compressor
wheel is damaged (bent or deformed). |
B. |
Check if the compressor
wheel rotates smoothly. EX)
|
If the compressor wheel are damaged, it may cause abnormal noise from the
turbocharger and poor acceleration.
If the compressor wheel are damaged or deformed, replace the turbocharger
with new ones.
|
7. |
Check the turbocharger turbine
wheel.
A. |
Check if the turbine
wheel is damaged. |
B. |
Check if the turbine
wheel rotates smoothly. EX)
|
If the turbine wheel are damaged, it may cause abnormal noise from the turbocharger
and poor acceleration.
If the turbine wheel are damaged or deformed, replace the turbocharger
with new ones.
|
If any problem is not detected in the turbocharger, check the turbocharger-related
parts according to the procedure as follows.
1. |
Check the blow-by hose. (Refer
to FL group)
A. |
Check if the breather
hose is damaged (bent, clogged). |
B. |
Check if the positive
crankcase ventilation (PCV) valve is clogged. |
If the breather hose is bent or clogged, the internal pressure in the engine
increases then engine oil is not supplied smoothly to the turbocharger.
So it may cause damage of the turbocharger and oil leaks.
If the cause of the problem is detected, replace the breather hose or
the related parts with new ones.
|
2. |
Check the air intake hose connected
to the turbocharger.
A. |
Check if the air intake
hose is damaged (bent, crushed, detached or torn). |
If a cross-section of the hose diminishes as the air intake hose is bent
or crushed, intake air to the turbocharger reduces and the pressure in front
of turbocharger drops. So it may cause damage of the turbocharger and oil
leaks. If the air intake hose is detached or torn, a foreign substance goes
into the turbocharger and causes damage of it.If the air intake hose
is damaged, replace it with a new one.
|
3. |
Check the air cleaner.
A. |
Check the air cleaner
filter for pollution state. |
B. |
Check the air cleaner
filter for water influx. |
C. |
Check the air cleaner
cover for dirtiness. |
D. |
Check if the air cleaner
filter is a genuine part.. |
If the air cleaner filter is moistened or polluted excessively or a non-genuine
part is used, intake air to the turbocharger reduces and the pressure in
front of turbocharger drops. So it may cause damage of the turbocharger
and oil leaks. .
If the air cleaner filter is moistened or polluted excessively, replace
it with a new one.
Replace the air cleaner filter according to the maintenance schedule. |
|
4. |
Check the intercooler hoses &
pipes.
A. |
Check if the intercooler
hoses & pipes are connected properly. |
B. |
Check if the intercooler
hoses & pipes are damaged (bent, detached or torn). |
C. |
Check if there is any
damage, such as crack, on the intercooler pipes. |
D. |
Check if the clamps are
positioned in place. |
If the intercooler hoses & pipes are damaged or disconnected, oil leaks
may occur from the hoses & pipes and the turbocharger may exceed the permissible
speed then it may cause damage of the turbocharger.If the intercooler
hoses & pipes are damaged, replace them with new ones.
Use new clamps when replacing the hoses & pipes. |
|
5. |
Check the intercooler.
A. |
Check if the intercooler
tubes and tanks are damaged (oil leak or crack). |
If the intercooler is damaged, the turbocharger may exceed the permissible
speed then it may cause damage of the turbocharger.
If the intercooler is damaged, replace them with a new one.
Use new clamps when replacing the intercooler. |
|
6. |
Check the engine oil.
A. |
Check the engine oil
level. |
B. |
Check the engine oil
for discoloration, water influx and viscosity degradation. |
C. |
Check the engine oil
grade. |
If the engine oil level is low, amount of engine oil fed to turbocharger
reduces then the bearings in the turbocharger may adhere due to insufficient
lubrication and cooling.
If the cause of the problem is detected, add or change engine oil.
Change the engine oil according to the maintenance schedule. |
|
7. |
Check the engine oil pressure.
A. |
Engine oil pressure:
Check the oil pressure using an oil pressure gauge after removing
the oil pressure switch on the cylinder block. |
B. |
Check the engine oil
screen in the oil pan if the engine oil level is low. Then check
the injectors for gas leaks if foreign substances are accumulated
on the oil screen. |
If the engine oil level is low, amount of engine oil fed to turbocharger
reduces then the bearings in the turbocharger may adhere due to insufficient
lubrication and cooling.
If the cause of the problem is detected, add or change engine oil. If
foreign substances are accumulated on the oil screen, wash the oil screen
and replace the injector’s washer with a new one after checking the injectors
for gas leaks. Check the engine oil-related parts, such as oil pump, if
necessary.
As the turbocharger rotates at high speed of 100,000 rpm or above,
deterioration of engine oil can cause damage of the turbocharger
bearings. Check engine oil for discoloration, water influx, viscosity
degradation and oil pressure lowering. |
|
8. |
Check the injectors, sensors,
etc. (Refer to FL group)
A. |
Check if the injectors
operate properly. |
B. |
Check if the sensors,
such as the mass air flow sensor (MAFS), intake air temperature
sensor (IATS), boost pressure sensor (BPS), operate properly. |
If the injectors, sensors and etc. don’t work properly, it may cause lack
of engine power.If the cause of the problem is detected, replace the
related parts with new ones.
|
Components
1. Turbine housing
2. Turbine inlet
3. Turbine outlet
4. Compressor housing
5. Compressor inlet
6. Compressor outlet
7. Center housing
8 ...
Components
1. Recirculation hose
2. Intercooler inlet hose A
3. Intercooler inlet pipe
4. Intercooler inlet hose B
5. Recirculation Solenoid Valve
6. Boost press ...
See also:
Removal
[Without EPB]
1.
Remove the rear wheel & tire.
Tightening torque:88.3
~107.9 N.m(9.0 ~11.0 kgf.m, 65.1 ~79.6 lb-ft)
2.
Rem ...
Oil Cooler. Repair procedures
...
To keep locks from freezing
To keep the locks from freezing, squirt an
approved de-icer fluid or glycerine into
the key opening. If a lock is covered with
ice, squirt it with an approved de-icing
fluid to remove the ice. ...