What may be an indication that you have a...

Question 1 / 2707066636ef128f7522a1c521698

Question 1 of 2707066636ef128f7522a1c521698

What may be an indication that you have a leaking injection nozzle?

Question 1 of 27070

What may be an indication that you have a leaking injection nozzle?

🔍 Key Concepts

• Fuel injection nozzle problems and how they affect combustion • Relationship between firing pressure and quality of combustion in a diesel cylinder • How exhaust temperature changes when fuel burns too early, too late, or too slowly

💭 Think About

• Think about what happens inside the cylinder if extra fuel is entering continuously instead of as a clean, sharp spray at the correct moment. • If combustion is poor and incomplete, would you expect the gas pressure at peak firing to be higher or lower than normal? • If burning continues later into the power stroke and possibly even into the exhaust, what would that do to the exhaust gas temperature?

✅ Before You Answer

• Compare which options show high vs. low firing pressure and decide what poor, leaking injection would most likely cause. • Check which answer choices pair high exhaust temperature with low firing pressure, and which do the opposite. • Remember that compression pressure is mostly about the condition of the piston/rings/valves, not directly about nozzle leakage—use that to rule out distractors.

Question 1 of 27070

What may be an indication that you have a leaking injection nozzle?

high exhaust temperature and low compression pressure

low exhaust temperature and high firing pressure

high exhaust temperature and low firing pressure

low exhaust temperature and high compression pressure

Question 1 / 2707066636ef128f7522a1c521698

Question 1 of 2707066636ef128f7522a1c521698

What may be an indication that you have a leaking injection nozzle?

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Question 1 of 27070

What may be an indication that you have a leaking injection nozzle?