🔍 Key Concepts

• diesel engines require correct air-fuel mixture and compression to start • effects of restricted air intake vs. exhaust back pressure on engine breathing • which components directly affect starting versus those affecting long-term operation (like vibration dampeners)

💭 Think About

• Which of these options would immediately affect how much air the cylinders receive during cranking? • Which items are more related to engine smoothness and longevity rather than the ability to start? • During starting, is cranking "too fast" usually a problem, or is cranking too slow more commonly an issue?

✅ Before You Answer

• Identify which choice directly affects airflow into the cylinders during start-up • Eliminate choices related mainly to vibration or running characteristics rather than starting • Consider whether low exhaust back pressure would make it easier or harder for gases to leave the cylinders