🔍 Key Concepts

• Dew point in exhaust systems and what happens when exhaust gases are cooled below it • Presence of sulfur compounds in diesel fuel and how they behave in cool, moist exhaust passages • Differences between problems on the exhaust side vs the compressor (intake) side of a turbocharger

💭 Think About

• Ask yourself: when water vapor in exhaust condenses, what else in the exhaust can dissolve into that water to form something harmful? • Which of the listed problems specifically involves a chemical reaction caused by cool, wet conditions, rather than just mechanical effects like flow resistance or droplet impact? • Which answer choices mention components that are on the intake/compressor side of a turbocharger, and would they normally see exhaust gas directly?

✅ Before You Answer

• Verify which side (exhaust or intake) of the turbocharger actually carries hot exhaust gases • Consider that cooling below the dew point creates liquid water plus dissolved exhaust gases – think about what acid could form from diesel’s sulfur content • Eliminate any options that mainly describe issues with airflow or mechanical erosion rather than chemical corrosion due to condensate