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No. 19 Exhaust Smoke [AJ]: Notes
POSSIBLE CAUSES DESCRIPTIONS
| 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
White smoke (Water in combustion):
- Cooling system malfunction (coolant loss)
- Engine internal coolant leakage
Black smoke (Rich fuel mixture):
- Air cleaner is restricted.
- Intake-air system collapsed or restricted.
- Fuel return line-is restricted.
- Excessive fuel pressure
- Improper engine compression
- Injector fuel leakage
- Ignition system 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 injuries or death and damage. Fuel can also irritate skin and eyes. To prevent this, always complete "BEFORE REPAIR PROCEDURE" and "AFTER REPAIR PROCEDURE" described in this manual.
(See
BEFORE REPAIR PROCEDURE [L3, AJ]
).
(See
AFTER REPAIR PROCEDURE [L3, AJ]
).
CAUTION:
- Disconnecting/connecting quick release connector without cleaning it may possibly cause damage to fuel pipe and quick release connector. Always clean quick release connector joint area before disconnecting/connecting, and make sure that it is free of foreign material.
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