Chart 18

WARNING: This page is about a different variant/trim than selected.

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

SYMPTOM CHART - EXHAUST SYSTEM CONCERNS: VISIBLE SMOKE

SYSTEM/COMPONENT	REFERENCE (Pinpoint Test unless noted)
Base Engine	REFER to the appropriate Engine article and carry out the Inspection and Verification to continue diagnosis.
Fuel Delivery System Black smoke	GO to PINPOINT TEST HC .
Ignition System Black smoke	For vehicles equipped with a coil pack ignition system, GO to PINPOINT TEST JC . For all others, GO to PINPOINT TEST JB .
Positive Crankcase Ventilation (PCV) System Blue smoke	REFER to the appropriate Engine article for a description of the Oil Consumption Test.
Turbocharger System Blue smoke	REFER to the appropriate FUEL CHARGING AND CONTROLS- Turbocharger for the Oil Consumption Test.