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KRYOTEC ENGINE
17
EXCESSIVE WHITE SMOKE
POSSIBLE CAUSE
CORRECTION
Air in fuel supply: Possible leak in fuel supply
side.
Inspect fuel system
Coolant leaking into combustion chamber.
Perform pressure test of cooling system.
Diagnostic Trouble Codes (DTC's) active or
multiple, intermittent DTC's.
(Refer to DTC-Based Diagnostics/Module, powertrain
Control (PCM) - Diagnosis and Testing)
In very cold ambient temperatures, engine
block heater is malfunctioning (if equipped).
(Refer to Cooling/Engine/Heater, Engine Block -
Diagnosis and Testing)
Engine
coolant
temperature
sensor
malfunctioning.
A DTC should have been set. (Refer to DTC-based
Diagnostics/ Module, powertrain Control (PCM) -
Diagnosis and Testing). Also check thermostat
operation.
Powertrain Control Module (PCM) has
incorrect calibration.
A DTC should have been set. (Refer to DTC-Based
Diagnostics/Module, Powertrain Control (PCM) -
Diagnosis and Testing).
Fuel filter plugged.
(Refer to Non-DTC Diagnostics/Drivability - Diesel -
Diagnosis and Testing).
Fuel grade not correct or fuel quality is poor.
Temporarily change fuel brands and note condition.
Change brand if necessary.
Fuel injector malfunctioning.
A DTC should have been set. Perform "Injector
Identification Programming" or "Cylinder Cutout Test"
using scan tool to isolate individual cylinders. Also
(Refer to DTC-Based Diagnostics/ Module, Powertrain
Control (PCM) - Diagnosis and Testing)
Fuel injector hold-down(s) loose.
Replace the copper washer(s) (shim) and tighten to
specifications.
Fuel injector protrusion not correct.
Check washer (shim) at bottom Of fuel injector for
correct thickness.
Fuel injection pump malfunctioning.
A DTC should have been set. (Refer to DTC-Based
Diagnostics/ Module, Powertrain Control (PCM) -
Diagnosis and Testing).
Fuel supply side restriction.
(Refer to Non-DTC Diagnostics/Drivability - Diesel -
Diagnosis and Testing) for fuel system testing.
Intake manifold air temperature sensor
malfunctioning
A DTC should have been set. (Refer to DTC-Based
Diagnostics/ Module, Powertrain Control (PCM) -
Diagnosis and Testing).
Intake manifold heater circuit not functioning
correctly in cold weather.
A DTC should have been set. (Refer to DTC-Based
Diagnostics/ Module, powertrain Control (PCM) -
Diagnosis and Testing). Also check heater elements for
correct operation.
Intake manifold heater elements not
functioning correctly in cold weather.
A DTC should have been set if heater elements are
malfunctioning. (Refer to DTC-Based Diagnostics/
Module, Powertrain Control (PCM) - Diagnosis and
Testing)