NO.19 EXHAUST SMOKE [MZR 2.3 DISI Turbo]

id0103e2802500

19

EXHAUST SMOKE
DESCRIPTION
•  Blue, black, or white smoke from exhaust system.
POSSIBLE CAUSE
Blue smoke (Burning oil):
•  PCV valve malfunction
•  Engine internal oil leakage
•  Oil leakage at the compressor or turbine end of the turbocharger
White smoke (Water in combustion):
•  Cooling system malfunction (coolant loss)
•  Engine internal coolant leakage
•  Coolant leakage at the compressor or the turbine end of the turbocharger
Black smoke (Rich fuel mixture):
•  Air cleaner restriction
•  Intake-air system is collapsed or restricted
•  Leakage at engine intake or exhaust manifold
•  Wastegate control solenoid valve malfunction (stuck open)
•  Excessive fuel pressure
•  Improper engine compression
•  Ignition system malfunction
•  Improper fuel injection timing and amount
Warning
•  The following troubleshooting flow chart contains the fuel system diagnosis and repair procedures. Read the following warnings before performing the fuel system services:
―  Fuel vapor is hazardous. It can easily ignite, causing serious injury and damage. Always keep sparks and flames away from fuel.
―  Fuel line spills and leakage are dangerous. Fuel can ignite and cause serious injury or death and damage. Fuel can also irritate skin and eyes. To prevent this, always complete “BEFORE SERVICE PRECAUTION” and “AFTER SERVICE PRECAUTION” described in this manual. (See BEFORE SERVICE PRECAUTION [MZR 2.3 DISI Turbo].) (See AFTER SERVICE PRECAUTION [MZR 2.3 DISI Turbo].)
Caution
•  Disconnecting/connecting the quick release connector without cleaning it may possibly cause damage to the fuel pipe and quick release connector. Always clean the quick release connector joint area before disconnecting/connecting, and make sure that it is free of foreign material.

Diagnostic procedure

STEP

INSPECTION

RESULTS

ACTION
1
What color is smoke coming from the exhaust system?
Blue
Burning oil is indicated.
•  Go to the next step.
White
Water in combustion is indicated.
•  Go to Step 5.
Black
Rich fuel mixture is indicating.
•  Go to Step 6.
2
Inspect the PCV valve.
(See POSITIVE CRANKCASE VENTILATION (PCV) VALVE INSPECTION [MZR 2.3 DISI Turbo].)
Is there any malfunction?
Yes
Replace the PCV valve.
(See POSITIVE CRANKCASE VENTILATION (PCV) VALVE REMOVAL/INSTALLATION [MZR 2.3 DISI Turbo].)
No
Go to the next step.
3
Remove the parts necessary to inspect the turbocharger without removing the turbocharger.
(See INTAKE-AIR SYSTEM REMOVAL/INSTALLATION [MZR 2.3 DISI Turbo].)
Visually inspect for the turbocharger compressor housing.
Is any engine oil found inside turbocharger compressor housing?
Yes
Install all removed parts in this step.
•  Excessive amount of oil is found:
―  Replace the turbocharger.
•  Small amount of oil is found:
―  Wipe the oil out of the vehicle, then go to the next step.
No
Turbocharger is normal.
•  Install all removed parts in this step, then go to the next step.
4
Inspect for the following engine internal parts:
•  Damaged valve guide, stems or valve seals
•  Blocked oil drain passage in cylinder head
•  Piston ring is not seated, seized or worn
•  Damage cylinder bore
Is there any malfunction?
Yes
Repair or replace the malfunctioning parts according to the inspection results.
No
Engine internal parts are normal.
•  If other driveability symptoms are present:
―  Return to diagnostic index to service additional symptoms.
5
Does the cooling system hold the coolant pressure?
(See ENGINE COOLANT LEAKAGE INSPECTION [MZR 2.3 DISI Turbo].)
Yes
Inspect for the following:
•  Cylinder head gasket leakage
•  Intake manifold gasket leakage
•  Cracked or porous engine block
―  If other driveability symptoms are present:
•  Return to diagnostic index to service additional symptoms.
―  If not:
•  Repair or replace the malfunctioning parts according to the inspection results.
No
Inspect for the cause.
•  If there is any malfunction:
―  Repair or replace the malfunctioning parts according to the inspection results.
6
Inspect for the following for intake-air system:
•  Air cleaner restriction
•  Collapsed or restricted
•  Leakage
Is there any malfunction?
Yes
Repair or replace the malfunctioning parts according to the inspection results.
No
Go to the next step.
7
Access the following PIDs using the M-MDS:
(See ON-BOARD DIAGNOSTIC TEST [MZR 2.3 DISI Turbo].)
•  APP1
•  APP2
•  BAT
•  ECT
•  MAF
•  IAT
•  TP REL
•  MAP
•  VSS
•  CPP
•  CPP/PNP
•  O2S11
•  O2S12
•  LONGFT1
•  SHTFT1
Monitor the PIDs under the black smoke appeared engine condition.
Do all PID values indicate normal according to the engine conditions?
(See PCM INSPECTION [MZR 2.3 DISI Turbo].)
Yes
Go to the next step.
No
Inspect the suspected parts and related wiring harness.
•  If normal:
―  Perform the “INTERMITTENT CONCERN TROUBLESHOOTING.
•  If not:
―  Repair or replace the malfunctioning parts according to the inspection results.
8
Inspect the wastegate.
(See WASTEGATE ACTUATOR INSPECTION [MZR 2.3 DISI Turbo].)
Does the wastegate stuck open?
Yes
Perform the Wastegate Control System Operation Inspection.
(See ENGINE CONTROL SYSTEM OPERATION INSPECTION [MZR 2.3 DISI Turbo].)
Repair or replace the malfunctioning parts according to the inspection results.
No
Go to the next step.
9
Access the same PIDs as in Step 7 under the trouble condition.
(See ON-BOARD DIAGNOSTIC TEST [MZR 2.3 DISI Turbo].)
Do the PID values indicate correct values under trouble condition?
(See PCM INSPECTION [MZR 2.3 DISI Turbo].)
Yes
Go to the next step.
No
Inspect the suspected parts and related wiring harness.
•  If normal:
―  Perform the “INTERMITTENT CONCERN TROUBLESHOOTING.
•  If not:
―  Repair or replace the malfunctioning parts according to the inspection results.
10
Access the FUEL_PRES PID using the M-MDS.
(See ON-BOARD DIAGNOSTIC TEST [MZR 2.3 DISI Turbo].)
Is the FUEL_PRES PID value within the specification?
(See PCM INSPECTION [MZR 2.3 DISI Turbo].)
Yes
Go to Step 14.
No
Go to the next step.
11
Is the vehicle accelerate performance normally?
Yes
Go to the next step.
No
Go to Step 13.
12
Inspect the fuel pressure sensor.
(See FUEL PRESSURE SENSOR INSPECTION [MZR 2.3 DISI Turbo].)
Is there any malfunction?
Yes
Replace the fuel delivery pipe.
(See FUEL INJECTOR REMOVAL/INSTALLATION [MZR 2.3 DISI Turbo].)
No
Go to Step 14.
13
Replace the high pressure fuel pump.
(See HIGH PRESSURE FUEL PUMP REMOVAL/INSTALLATION [MZR 2.3 DISI Turbo].)
Access the FUEL_PRES PID using the M-MDS.
(See ON-BOARD DIAGNOSTIC TEST [MZR 2.3 DISI Turbo].)
Is the FUEL_PRES PID value within the specified?
(See PCM INSPECTION [MZR 2.3 DISI Turbo].)
Yes
High-pressure fuel pump or spill valve control solenoid valve (built-in high pressure fuel pump) malfunction.
•  Go to Step 16.
No
Relief valve malfunction.
•  Replace the fuel delivery pipe.
14
Perform the Spark Test.
(See ENGINE COOLANT LEAKAGE INSPECTION [MZR 2.3 DISI Turbo].)
Is a strong blue spark visible at each cylinder?
Yes
Go to the next step.
No
Repair or replace the malfunctioning parts according to the inspection results.
15
Measure the compression pressure for each cylinder.
(See COMPRESSION INSPECTION [MZR 2.3 DISI Turbo].)
Are compression pressures within the specification?
Yes
Inspect the fuel injector for each cylinder.
(See FUEL INJECTOR INSPECTION [MZR 2.3 DISI Turbo])
Replace the suspected fuel injector.
(See FUEL INJECTOR REMOVAL/INSTALLATION [MZR 2.3 DISI Turbo])
No
Inspect for the following:
•  Damaged valve seat
•  Worn valve stem and valve guide
•  Worn or stuck piston ring
•  Worn piston, piston ring or cylinder
•  Improper valve timing
Repair or replace the malfunctioning parts according to the inspection results.
16
Verify test results.
•  If normal, return to the diagnostic index to service any additional symptoms.
•  If a malfunction remains, inspect the related Service Information and perform the repair or diagnosis.
―  If the vehicle is repaired, troubleshooting is completed.
―  If the vehicle is not repaired or additional diagnostic information is not available, reprogram the PCM if a later calibration is available. Retest.