Ford Galaxy / Ford S-MAX. Manual — part 402
Fuel Charging and Controls -
Turbocharger - 2.2L Duratorq-TDCi
(129kW/175PS) - DW - Turbocharger
S-MAX/Galaxy 2006.5 (02/2006-)
Diagnosis and Testing
Special Tool(s)
General Equipment
Inspection and Verification
NOTE: It is normal for a small amount of combustion gas to pass into the crankcase. This
gas is scavenged into the air intake system through the positive crankcase ventilation
(PCV) system, which incorporates an oil separator. Some engine oil, in the form of a
vapor is carried into the air intake system with the blow-by gases (this engine oil also
contributes to valve seat durability). This means that oil will collect inside the air intake
components and the turbocharger. This is not an indication that the turbocharger oil seal
has failed. The turbocharger oil seal will not fail unless the bearings fail first, which will
cause the turbocharger to become noisy or seize. Do not install a new turbocharger due
to oil inside the turbocharger or the air intake components. If a leak is detected in the oil
supply or return tubes or connections, locate and rectify the source. Do not install a new
turbocharger due to an oil leak.
1. 1. Verify the customer concern.
2. 2. Visually inspect for obvious signs of mechanical or electrical damage.
Visual Inspection Chart
3. 3. If an obvious cause for an observed or reported concern is found, correct the cause
(if possible) before proceeding to the next step.
4. 4. If the cause is not visually evident, verify the symptom and refer to the Symptom
Hand Vacuum/Pressure Pump
416 - D001 (23 - 036A)
Fuel Pressure Gauge
310-053 (23-046)
Worldwide Diagnostic System (WDS) (418-
F224)
Mechanical
Electrical
Oil leak(s)
Air cleaner element
Air cleaner outlet pipe
Air cleaner intake pipe
Turbocharger oil supply or oil return tube
Turbocharger intake pipe
Turbocharger vacuum diaphragm unit
Turbocharger housing
Charge air cooler
Charge air cooler intake pipe and hose(s)
Charge air cooler outlet pipe and hose(s)
Wiring harness
Vane adjustment solenoid valve
PCM
Chart.
Symptom Chart
Symptom Chart
Pinpoint Tests
NOTE: The vacuum diaphragm unit is a fixed part of the turbocharger and cannot be
adjusted or renewed.
Symptom
Possible Sources
Action
Blue smoke with
excessive
turbocharger
noise
Turbocharger
compressor rubbing
on housing walls.
Turbocharger
turbine rubbing on
housing walls.
Turbocharger
bearings and oil seal
(s).
Turbocharger oil
supply tube blocked
or damaged.
*
*
*
*
GO to Pinpoint Test
A.
*
Blue smoke
without excessive
turbocharger
noise
Turbocharger oil
return tube blocked
or damaged.
*
GO to Pinpoint Test
B.
*
Poor engine
performance
Vacuum diaphragm
unit vacuum line(s).
*
CHECK all vacuum line(s) are installed and no
signs of air leaks are present. REPAIR as
necessary.
*
Charge air cooler
system.
*
CHECK the charge air cooler, charge air cooler
pipes and charge air cooler hoses for leaks and
obstructions. REPAIR as necessary.
*
Air cleaner intake
pipe.
*
CHECK the air cleaner intake pipe for obstruction.
REPAIR the necessary.
*
Unauthorized
adjustment of the
vacuum diaphragm
unit actuator rod.
*
The turbocharger boost pressure is factory set
and must not be adjusted. CHECK the paint seal
on the vacuum diaphragm unit actuator rod has
not been broken. If the paint seal has been
broken, INSTALL a new turbocharger.
REFER to:
Turbocharger
(303-04J Fuel Charging
and Controls - Turbocharger - 2.0L Duratorq-TDCi
(85kW/115PS) - DW/2.0L Duratorq-TDCi
(100kW/136PS) - DW/2.0L Duratorq-TDCi
(103kW/140PS) - DW, Emission Requirements:
Stage IV, Removal and Installation).
*
Vacuum diaphragm
unit actuator rod.
*
CHECK the vacuum diaphragm unit actuator rod
moves freely, If the vacuum diaphragm unit
actuator rod does not move freely. CHECK for
signs of damage or signs of foreign material.
REPAIR as necessary.
*
Turbocharger boost
pressure.
*
GO to Pinpoint Test
C.
*
PINPOINT TEST A : BLUE SMOKE WITH EXCESSIVE TURBOCHARGER NOISE
TEST CONDITIONS
DETAILS/RESULTS/ACTIONS
A1: INSPECT THE TURBOCHARGER ROTOR VANES FOR DAMAGE
Remove the engine upper cover.
1
Disconnect the positive crankcase ventilation (PCV)
breather hose from the intake manifold PCV valve.
Press in the release clip.
2
Remove the turbocharger intake pipe support
bracket retaining bolt.
3
Raise and support the vehicle. For additional
information,
REFER to:
Lifting
(100-02 Jacking and Lifting,
Description and Operation).
4
Remove the engine undershield.
Rotate the locking tangs counterclockwise.
5
Detach the turbocharger intake pipe.
6
Inspect the turbocharger rotor vanes for damage.
7
Is there visible damage to the rotor vanes?
Yes
GO to A2
.
No
GO to A3
.
A2: CHECK FOR FOREIGN MATERIAL IN THE INTAKE AIR SYSTEM COMPONENTS
Check the intake air system components for signs
of foreign material.
1
Are there any signs of foreign material?
Yes
CLEAN the intake air system components. INSTALL
a new turbocharger.
REFER to:
Turbocharger
(303-04J Fuel Charging
and Controls - Turbocharger - 2.0L Duratorq-TDCi
(85kW/115PS) - DW/2.0L Duratorq-TDCi
(100kW/136PS) - DW/2.0L Duratorq-TDCi
(103kW/140PS) - DW, Emission Requirements:
Stage IV, Removal and Installation).
TEST the system for normal operation.
No
GO to A4
.
A3: CHECK THE TURBOCHARGER BEARINGS FOR EXCESSIVE MOVEMENT
NOTE: A small amount of movement in the bearings is normal.
Make sure the turbocharger rotor spins freely
within the housing.
1. With the turbocharger stationary, gently lift
the shaft (the shaft will naturally lay in the
bottom of the bearings).
2. Make sure the rotor spins freely within the
housing.
1
Does the rotor spin freely within the housing with no
excessive movement?
Yes
GO to A4
.
No
INSTALL a new turbocharger.
REFER to:
Turbocharger
(303-04J Fuel Charging
and Controls - Turbocharger - 2.0L Duratorq-TDCi
(85kW/115PS) - DW/2.0L Duratorq-TDCi
(100kW/136PS) - DW/2.0L Duratorq-TDCi
(103kW/140PS) - DW, Emission Requirements:
Stage IV, Removal and Installation).
TEST the system for normal operation.
A4: CHECK THE TURBOCHARGER OIL SUPPLY TUBE FOR BLOCKAGE
NOTE: Discard the copper washers.
Remove the turbocharger oil supply tube.
1
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