Often a defective turbocharger
is the consequence of some other primary engine defect which
cannot be cured just by replacing the turbo. However, with this
diagnostic matrix you can possibly determine the nature and
extent of the real problem.
Dirty
air afilter system
Intake
or pressure hose distorted an/or leaking
Excessive
flow resistance in exhaust system/leakage upstream of turbine
Oil
feed an/or drain lines clogged, leaking or distorted
Crankcase
ventilation clogged and/or distorted
Oil
coked or sludge in turbocharger center housing
Fuel system/injection feed system defective or incorrectly adusted
Valve
guide, piston rings. engine or cylinder liners worn/increased
blow by
Dirty
compressor or clogged intercooler
Boost
pressure control swing valve/poppet valve does not close
Boost
pressure control swing valve/poppet valve does not open
Pipe
or hose assy. To actuator valve defective or ruptured
Compressor
turbine and sealing rings damaged
Turbocharger
bearing damage
Foreign
object damage to compressor or turbine wheels
Exhaust
gasleak between turbine outlet and exhaust pipe
Engine
air collector/cleaner missing or loose gaskets
