No. 19 - Exhaust Smoke: Notes
NO. 19 EXHAUST SMOKE DESCRIPTION AND POSSIBLE CAUSE
| 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):
- Erratic signal to PCM
- APP sensor or related circuit malfunction
- ECT sensor No. 1 or related circuit malfunction
- IAT sensor No. 1 (integrated in MAF sensor/IAT sensor No. 1) or related circuit malfunction
- MAF sensor or related circuit malfunction
- MAP sensor or related circuit malfunction
- A/F sensor or related circuit malfunction
- HO2S or related circuit malfunction
- TP sensor or related circuit malfunction
- Boost pressure sensor signal
- Boost air temperature sensor signal
- Improper fuel injection timing and amount
- Air cleaner restriction
- Intake-air system is collapsed or restricted
- Leakage at engine intake manifold and/or exhaust manifold
- Inadequate/Excessive fuel pressure
- Fuel pressure sensor 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 high pressure fuel pump) malfunction
- Fuel line restricted or clogged
- Fuel pump unit malfunction
- Ignition system malfunction
- Improper engine compression
- Improper intake valve timing
- Improper exhaust valve timing
- Injector 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.
- Highly pressurized fuel may spray out if the fuel line is cut. Due to the following dangers occurring with a fuel spray, always complete the "Fuel Line Safety Procedure" to prevent the fuel from spraying. (See BEFORE SERVICE PRECAUTION
.)
- Fuel may cause irritation if it comes in contact with skin and eyes.
- If fuel ignites and causes a fire, it may lead to serious injury or death, and damage to property and facilities.
- Fuel is highly flammable and dangerous. Fuel line spills and leakage can cause serious injury or death, and damage to equipment. Always refer to the "Quick Release Connector Removal/Installation (fuel system)" before performing the fuel hose installation, and execute the "Fuel Leakage Inspection" after installation. (See QUICK RELEASE CONNECTOR REMOVAL/INSTALLATION
.) (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.
|