No. 19 Exhaust Smoke: Notes

EXHAUST SMOKE POSSIBLE CAUSE DESCRIPTION

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 file. (See BEFORE REPAIR PROCEDURE .) (See AFTER REPAIR PROCEDURE .)