Unusually low oil pressure in the lube oil...

Question 1 / 205eccefa2bacbc34ba4d47947

Question 1 of 205eccefa2bacbc34ba4d47947

Unusually low oil pressure in the lube oil header of a diesel engine is the result of a/an __________.

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Question 1 of 20

5eccefa2bacbc34ba4d47947

Unusually low oil pressure in the lube oil header of a diesel engine is the result of a/an __________.

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🔍 Key Concepts

• Lube oil system flow path: sump → pump suction → pump discharge → cooler/filter → lube oil header → engine bearings • Effect of air leaks on pump suction vs. discharge pressure • Difference between a restriction in discharge and a loss of suction on system pressure and flow

💭 Think About

• Trace the lube oil from the sump through the pump and into the header: where would a problem cause the entire header pressure to drop unusually low? • Think about what happens to pressure if a valve is stuck closed: would that make pressure higher or lower upstream of the valve? • Consider how air entering the system before the pump affects the pump’s ability to build and maintain pressure in the header.

✅ Before You Answer

• Identify whether each choice would affect system pressure upstream or downstream of the problem point • Decide which condition would cause a general loss of pressure throughout the header, not just at one local component • Check which option would most likely cause the pump to lose prime or cavitate, leading to low header pressure

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Question 1 of 20

Unusually low oil pressure in the lube oil header of a diesel engine is the result of a/an __________.

pressure regulating valve being stuck in the closed position

restricted lube oil passage in the engine

air leak in the lube oil cooler

air leak in the oil pump suction line

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Question 1 / 205eccefa2bacbc34ba4d47947

Question 1 of 205eccefa2bacbc34ba4d47947

Unusually low oil pressure in the lube oil header of a diesel engine is the result of a/an __________.

Back

Question 1 of 20

5eccefa2bacbc34ba4d47947

Unusually low oil pressure in the lube oil header of a diesel engine is the result of a/an __________.

No comments yet

Be the first to share your thoughts!

If the question has a related picture, it will appear here.

🔍 Key Concepts

💭 Think About

✅ Before You Answer

👋 Hi! I'm Genie, your AI study assistant. How can I help you with this question?

Quick actions

— No credit card needed