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BackRelationship Between Color of Exhaust Gas and Suitability of Mixing Ratio of Fuel and Air
| Color of Exhaust Gas | Mixing Ratio of Fuel and Air |
|---|---|
| Colorless | Optimum |
| Black | Fuel ….. excessive |
| Light Yellow | Air …… excessive |
| Gray | Fuel and lubricating oil … excessive |
| Light Sky Blue | Lubricating oil …… excessive |