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 NO.19 EXCESSIVE BLACK SMOKE [L3 Turbo]

NO.19 EXCESSIVE BLACK SMOKE [L3 Turbo]

id0103b4803900

19

EXHAUST SMOKE

DESCRIPTION

Blue, black, or smoke from the 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 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 REPAIR ROCEDURE" and "AFTER REPAIR PROCEDURE" described in this manual.
(See BEFORE SERVICE PRECAUTION [L3 Turbo].)
(See AFTER SERVICE PRECAUTION [L3 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 the Step 5.
Black
Rich fuel mixture is indicating.
Go to the Step 6.
2
Remove and shake the PCV valve.
Does the PCV valve rattle?
Yes
Go to the next step.
No
Replace the PCV valve.
3
Remove the parts necessary to inspect turbocharger without remove the turbocharger.
Visually inspect for the turbocharger compressor housing.
Is any engine oil found inside turbocharger compressor housing?
Yes
Install all parts removed in this step.

Perform the following, according to inspection results. Excessive amount of oil is found:

Replace the turbocharger.

Small amount of oil is found:

Wipe oil out of vehicle, then Go to the next step.
No
Turbocharger is normal.
Install all parts removed 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
Are there ant problem found?
Yes
Repair or replace suspected 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 cooling system hold the coolant pressure?
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.
No
Inspect for the cause.
6
Inspect for the following for intake-air system.
• Air cleaner restriction
• Collapsed or restricted
• Leakage
Are all items normal?
Yes
Go to the next step.
No
Repair or replace the suspected part.
7
Connect the WDS or equivalent to the DLC-2.
Access following PIDs.
• ECT
• MAF
• IAT
• IAT2
• APP
• TP
• MAP
• VSS
• O2S11
• O2S12
• LONGFT1
• SHTFT1
• PNP (PCM terminal 1W)
• CPP (PCM terminal 1H)
Monitor the PIDs under the black smoke appeared engine condition.
Do all PID indicate normal according to engine conditions?
Yes
Go to the next step.
No
Inspect and repair or replace suspected parts and the the related harnesses.
If the malfunction remains, perform the intermittent concern troubleshooting procedure.
8
Inspect the wastegate.
Does the wastegate stuck open?
Yes
Perform the wastegate control system operation inspection.
Repair or replace malfunctioning part according to the inspection results.
No
Go to the next step.
9
Connect the WDS or equivalent to DLC-2.
Access and monitor following PIDs using the data monitor function.
• ECT
• MAF
• IAT
• IAT2
• APP
• TP
• MAP
• VSS
• CPP (PCM terminal 1H)
• PNP (PCM terminal 1W)
• O2S11
• O2S12
• LONGFT1
• SHTFT1
Do the PIDs indicate correct values under trouble condition?
Yes
Go to the next step.
No
Inspect and repair or replace suspected parts and related harnesses.
If the malfunction remains, perform the intermittent concern troubleshooting procedure.
10
Access and monitor the FUEL_PRES PID.
Is the FUEL_PRES PID value within the specification?
Yes
Go to Step 14.
No
Go to the next step.
11
Is vehicle accelerate performance normally?
Yes
Go to the next step.
No
Go to Step 13.
12
Inspect the fuel pressure sensor.
Is the fuel pressure sensor normal?
Yes
Go to Step 14.
No
Replace the delivery pipe.
13
Replace the high pressure fuel pump.
Monitor FUEL_PRES PID.
Is the FUEL_PRES PID value within the specified?
Yes
Troubleshooting is completed.
Retest Step 16.
No
Go to the next step.
14
Perform the spark test.
(See Spark Test.)
Is a strong blue spark visible at each cylinder?
Yes
Go to the next step.
No
Inspect or replace the malfunctioning parts, according to the inspection results.
15
Measure the compression pressure for each cylinder.
Are compression pressures within the specification?
Yes
Inspect the fuel injector for each cylinder.
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
Service if necessary.
16
Verify test results.
• If normal, return to the diagnostic index to service any additional symptoms.
• If a malfunction remains, inspect the related Service Bulletins and/or On-line Repair 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.