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)
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