Ford Transit 2002 Owner's Manual page 1000

Fuel Charging and Controls -
Turbocharger - Turbocharger—75 PS/90
PS, Vehicles Built Up To: 08/2006
Diagnosis and Testing
Special Tool(s)
Boost Pressure Gauge
310 - 020 (23 - 021)
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 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
Chart.
Symptom Chart
Symptom Chart
Symptom Possible Sources
Blue smoke with * Turbocharger
excessive compressor rubbing
turbocharger noise on housing walls.
Mechanical
Oil leak(s)
Air cleaner element
Turbocharger intake tube
Air cleaner intake pipe
Turbocharger oil supply or oil return tube
Wastegate control valve
Turbocharger housing
Wastegate control pipe
Catalytic converter
* GO to Pinpoint Test
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Transit/Tourneo Connect 2002.5 (06/2002-)
Action
A. .
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