MDE 16 Q1

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Question 3:

How can a blocked oil filter lead to low lubricating oil pressure, and what is the appropriate remedy?

C) It dilutes the oil; change the oil

D) It increases oil temperature; cool the oil

A) It restricts oil flow; replace the oil filter

B) It causes oil to leak; tighten the oil filter

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Question 4:

What should be checked if low lubricating oil pressure is suspected due to oil level issues?

C) Oil pump operation

D) Oil filter condition

A) Oil temperature

B) Oil level in the engine

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Question 1:

What could be a common cause of unstable engine speed related to the fuel system?

A) Faulty air filter

B) Malfunctioning fuel injectors

D) Clogged exhaust system

C) Low oil level

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Question 5:

If unstable engine speed is caused by a problem with the turbocharger, what should be checked?

B) Engine coolant level

A) Turbocharger oil supply

D) Air intake temperature sensor

C) Exhaust manifold gasket

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Question 6:

What could be a consequence of a blocked or restricted air intake on engine temperature, and how can it be fixed?

B) It can cause oil contamination; change the oil

C) It can cause reduced power; adjust the fuel injection

D) It can cause exhaust leaks; check and repair exhaust system

A) It can cause overheating; clean or replace the air filter

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Question 4:

How can issues with the fuel supply system lead to unstable engine speed, and what is the appropriate remedy?

D) Broken engine mounts; repair mounts

A) Fuel contamination; replace the fuel filter

B) Low engine oil pressure; add oil

C) Faulty starter motor; replace starter

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Question 7:

If an engine is overheating due to a failing radiator fan, what should be the corrective action?

C) Adjust the ignition timing

B) Repair or replace the radiator fan

D) Replace the fuel pump

A) Increase engine RPM

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Question 7:

If unstable engine speed is caused by a malfunctioning governor, what is the recommended solution?

A) Clean the governor

C) Replace the governor

D) Check and replace fuel lines

B) Adjust the governor settings

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Question 7:

How can a leaking oil line or gasket contribute to low lubricating oil pressure, and what is the appropriate solution?

A) It allows oil to escape; repair or replace the damaged line or gasket

D) It raises oil temperature; improve cooling

B) It increases oil viscosity; change the oil

C) It contaminates the oil; replace the oil filter

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Question 5:

If low lubricating oil pressure is caused by excessive oil viscosity, what is the recommended action?

A) Replace the oil pump

D) Clean the oil passages

C) Adjust the oil pressure relief valve

B) Change the oil to a lower viscosity grade

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Question 2:

If a diesel engine is experiencing unstable speed due to air intake issues, what is the most likely cause?

D) Leaking fuel lines

B) Dirty or blocked air filter

A) Faulty turbocharger

C) Low coolant level

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Question 6:

What could be the effect of a malfunctioning oil pressure relief valve on oil pressure, and how should it be addressed?

A) It can cause high oil pressure; adjust or replace the relief valve

C) It can cause fluctuating oil pressure; replace the oil filter

D) It can cause oil temperature issues; check the coolant system

B) It can cause low oil pressure; clean the relief valve

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Question 1:

What is a common cause of low lubricating oil pressure in a diesel engine?

D) Faulty fuel injectors

B) Oil pump failure

C) Dirty air filter

A) High oil temperature

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Question 2:

If a diesel engine is overheating due to a malfunctioning thermostat, what is the appropriate remedy?

B) Replace the thermostat

A) Clean the fuel system

D) Adjust the timing

C) Increase engine load

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Question 1:

What is a common cause of diesel engine overheating related to the cooling system?

B) Low oil pressure

D) Excessive exhaust back pressure

A) Faulty fuel injectors

C) Clogged radiator or coolant passages

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Question 5:

If a diesel engine is overheating due to excessive engine load, what should be done to remedy the situation?

C) Adjust the air intake

A) Reduce engine load

B) Increase the fuel supply

D) Clean the fuel injectors

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Question 3:

What is a potential cause of unstable engine speed related to the engine's electronic control system?

D) Low battery voltage

C) Leaking cylinder head gasket

B) Faulty engine control unit (ECU)

A) Worn timing belt

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Question 4:

How can a malfunctioning water pump lead to overheating, and what is the recommended solution?

A) It can cause coolant to leak; replace the water pump

D) It can cause excessive exhaust temperature; adjust the timing

B) It can restrict coolant flow; replace the water pump

C) It can increase oil temperature; replace the oil filter

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Question 2:

Which of the following is a remedy for low lubricating oil pressure due to worn engine bearings?

D) Add more oil

A) Replace the oil filter

B) Clean the oil cooler

C) Rebuild or replace the engine bearings

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Question 6:

What could be a mechanical cause of unstable engine speed, and how can it be fixed?

A) Worn camshaft; replace the camshaft

B) Faulty thermostat; replace the thermostat

C) Low fuel pressure; adjust the fuel pressure regulator

D) Loose electrical connections; tighten connections

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Question 3:

What action should be taken if low coolant levels are causing engine overheating?

D) Clean the air filter

C) Flush the coolant

B) Add coolant to the system

A) Replace the radiator cap

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