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| DIFFERENT TYPES OF SMOKE |
| Black = incomplete combustion |
| Blue = unburned engine oil mixed in the exhaust, usually due to worn piston rings, cylinder liners, valve guides or other components |
| White |
= droplets of unburned |
| liquid fuel and water vapor, occurs typically at start-up, or idle |
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Pass Your Emissions Test With Ethos FR
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Diesel engines are well known for their superior durability, often lasting 10 to 30 years. This means that there are still older vehicles that remain on the road today, and a fraction of these older vehicles are improperly maintained or maladjusted, causing them to emit excessive smoke and other pollutants.
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| Factors Contributing to Smoke |
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- Poor fuel quality
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| - Restricted air filter |
| - Clogged, worn or mismatched fuel injectors |
| - Improper injection timing |
| - Faulty fuel injection pump |
| - Defective or maladjusted puff limiter |
| - Low air box pressure |
| - Improperly adjusted valve lash or governor |
| - Malfunctioning turbocharger |
| - Malfunctioning aftercoolers |
| - Maladjusted fuel rack |
| - Defective air fuel controller |
| - Improper driving gear |
| - Air manifold leaks |
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