No.19 Exhaust Smoke: Notes

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) Erratic signal to PCM APP sensor or related circuit malfunction ECT sensor No.1 or related circuit malfunction IAT sensor (integrated in MAF/IAT sensor) or related circuit malfunction MAF sensor (integrated in MAF/IAT sensor) or related circuit malfunction MAP sensor (integrated in MAP sensor/boost air temperature sensor) or related circuit malfunction Boost air temperature sensor (integrated in MAP sensor/boost air temperature sensor) or related circuit malfunction TP sensor or related circuit malfunction CPP switch or related circuit malfunction Neutral switch or related circuit malfunction A/F sensor or related circuit malfunction HO2S or related circuit malfunction Improper air/fuel mixture ratio control operation VSS or related circuit malfunction Excessive fuel pressure Fuel pressure sensor or related circuit malfunction High pressure fuel pump malfunction Spill valve control solenoid valve control circuit malfunction (damage to driver in PCM caused by short circuit to ground system) Spill valve control solenoid valve (built-into high pressure fuel pump) malfunction Relief valve (built-into fuel delivery pipe) malfunction Improper engine compression Ignition system malfunction Improper fuel injection timing and amount Fuel injector control driver (built-into PCM) malfunction 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 .) (See AFTER SERVICE PRECAUTION .) 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.

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)
Erratic signal to PCM
- APP sensor or related circuit malfunction
- ECT sensor No.1 or related circuit malfunction
- IAT sensor (integrated in MAF/IAT sensor) or related circuit malfunction
- MAF sensor (integrated in MAF/IAT sensor) or related circuit malfunction
- MAP sensor (integrated in MAP sensor/boost air temperature sensor) or related circuit malfunction
- Boost air temperature sensor (integrated in MAP sensor/boost air temperature sensor) or related circuit malfunction
- TP sensor or related circuit malfunction
- CPP switch or related circuit malfunction
- Neutral switch or related circuit malfunction
- A/F sensor or related circuit malfunction
- HO2S or related circuit malfunction
- Improper air/fuel mixture ratio control operation
- VSS or related circuit malfunction
Excessive fuel pressure
- Fuel pressure sensor or related circuit malfunction
- High pressure fuel pump malfunction
- Spill valve control solenoid valve control circuit malfunction (damage to driver in PCM caused by short circuit to ground system)
- Spill valve control solenoid valve (built-into high pressure fuel pump) malfunction
- Relief valve (built-into fuel delivery pipe) malfunction
Improper engine compression
Ignition system malfunction
Improper fuel injection timing and amount
Fuel injector control driver (built-into PCM) malfunction

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 .) (See AFTER SERVICE PRECAUTION .)

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.