Chart 18
- 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 - GASOLINE MODELS unless noted) |
|---|---|
| Base Engine | REFER to ENGINE . |
| Black smoke: Fuel Delivery System |
GO to PINPOINT TEST HC . |
| Black smoke: Ignition System |
For vehicles equipped with a coil pack ignition system, GO to PINPOINT TEST JC . |
| For all others, GO to PINPOINT TEST JB . | |
| Blue smoke: PCV System |
REFER to ENGINE SYSTEM - GENERAL INFORMATION for a description of the Oil Consumption Test. |