Chart 18

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Exhaust System Concerns: Visible Smoke

NOTE: Black smoke indicates a rich fuel mixture, blue smoke indicates burning oil, and white smoke indicates water in the combustion chamber.

SYSTEM/COMPONENT	REFERENCE (Pinpoint Test unless noted)
Base Engine	REFER to the service information , Engine System, Diagnosis and Testing to continue diagnosis.
Fuel Delivery System Black smoke	GO to Pinpoint Test HC .
Ignition System Black smoke	For Fiesta 1.6L TIVCT, GO to Pinpoint Test JC . For all others, GO to Pinpoint Test JB .
Positive Crankcase Ventilation (PCV) System Blue smoke	REFER to the service information , Engine System for a description of the Oil Consumption Test.
Turbocharger System Blue smoke	REFER to the service information Fuel Charging and Controls - Turbocharger for the Oil Consumption Test.