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 (Section 5 Pinpoint Test unless noted)
Base Engine	REFER to the appropriate service information article, Engine System and CARRY OUT the Inspection and Verification to continue diagnosis.
Fuel Delivery System Black smoke	GO to PINPOINT TEST HC: FUEL DELIVERY SYSTEM .
Ignition System Black smoke	For Fiesta 1.6L TIVCT, GO to PINPOINT TEST JC: SECONDARY IGNITION (COIL PACK) . For all others, GO to PINPOINT TEST JB: SECONDARY IGNITION (COP) .
Positive Crankcase Ventilation (PCV) System Blue smoke	REFER to the appropriate service information article, Engine System for a description of the Oil Consumption Test.
Turbocharger System Blue smoke	REFER to the appropriate service information article, Fuel Charging and Controls - Turbocharger for the Oil Consumption Test.