Great care should be taken to prevent a day...

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Question 1 of 2066636eef28f7522a1c51fc84

Great care should be taken to prevent a day tank from being pumped empty while a diesel engine is in operation. If this does happen on your OSV, the engine fuel and fuel injection system must be reprimed. What is accomplished during repriming?

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🔍 Key Concepts

• Diesel fuel injection systems and what happens if they run out of fuel • The difference between air, water (moisture), and solid impurities in a fuel system • What repriming or bleeding a diesel fuel system is meant to correct

💭 Think About

• When a diesel day tank is pumped empty, what actually enters the fuel lines and injection system? How does that affect starting and running? • Think about what problem mechanics are fixing when they "bleed" or "prime" a diesel fuel system after it has run dry. • Which of the options describes something that would most directly restore proper fuel pressure and continuous fuel flow to the injectors?

✅ Before You Answer

• Identify which contaminant or condition (air, water, or solids) is the most common issue after a diesel runs completely out of fuel. • Ask yourself: which process would most likely be called priming or repriming in diesel engine manuals? • Eliminate any options that describe treatments or processes that are not normally part of priming a diesel fuel system.

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