No. 19 Excessive Black Smoke: Notes

POSSIBLE CAUSES DESCRIPTIONS

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 PROCEDURE" and "AFTER REPAIR PROCEDURE" described in this manual. (See BEFORE REPAIR PROCEDURE ). (See AFTER REPAIR PROCEDURE ). 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 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 PROCEDURE" and "AFTER REPAIR PROCEDURE" described in this manual.
  (See BEFORE REPAIR PROCEDURE ).
  
  (See AFTER REPAIR PROCEDURE ).
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.