Ford Transit 2002 Owner's Manual page 1010

Fuel Charging and Controls -
Turbocharger - Turbocharger—75 PS/90
PS/110 PS, Vehicles Built From: 08/2006,
Vehicles With: Variable Vane
Turbocharger
Diagnosis and Testing
General Equipment
Worldwide Diagnostic System (WDS)
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
Mechanical
Air cleaner element
Air cleaner outlet pipe
Air cleaner intake pipe
Turbocharger oil supply pipe
Turbocharger oil return tube
Turbocharger intake pipe
Turbocharger housing
Charge air cooler
Charge air cooler intake pipe and hose(s)
Charge air cooler outlet pipe and hose(s)
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
Chart.
Symptom Chart
Symptom
Blue smoke with
excessive
turbocharger noise
Oil leak(s)
Possible Sources
* Turbocharger
compressor rubbing on
housing walls.
* Turbocharger turbine
rubbing on housing
walls.
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Transit/Tourneo Connect 2002.5 (06/2002-)
Electrical
Wiring harness
Turbocharger electronic actuator
Action
* GO to Pinpoint Test A.
Print
PCM