Quiz 2 - Lubricating And Cooling Systems
Review questions on lubricating systems
- 1.Which of the following is a function of the engine's lubrication system?
- A.
Holds an adequate supply of oil
- B.
Removes contaminates from the oil
- C.
Delivers oil to all necessary areas of the engine
- D.
All of the above
- 2.Technician A says that the 'S' service rating system (SA,SB,SC,etc.) rates oil for gasoline engines and refers to the level of additives and other characteristics of the oil's makeup. Technician B says that an SL rated oil can be used in place of an SH rated oil. Who is correct?
- A.
A only
- B.
B only
- C.
Both A and B
- D.
Neither A nor B
- 3.Engine oil viscosity ratings are being discussed. Technician A says a low-weight oil works best in high-temperature regions. Technician B says all multi-viscosity oils are interchangeable. Who is correct?
- A.
A only
- B.
B only
- C.
Both A and B
- D.
Neither A nor B
- 4.Technician A says that engine oil is used to clean, cool, and lubricate the engine. Technician B says engine oil helps seal some internal engine parts. Who is correct?
- A.
A only
- B.
B only
- C.
Both A and B
- D.
Neither A nor B
- 5.Engine oil pressure is being discussed. Technician A says low pressure may be caused by worn engine bearings. Technician B says oil viscosity, temperature, and contamination can affect oil pressure. Who is correct?
- A.
A only
- B.
B only
- C.
Both A and B
- D.
Neither A nor B
- 6.When an engine experiences decreased oil pressure, Technician A says that piston slap is a likely initial symptom. Technician B says that valvetrain noise is common with decreased oil pressure. Who is correct?
- A.
A onl;y
- B.
B only
- C.
Both A and B
- D.
Neither A nor B
- 7.Which of the following would not cause low oil pressure?
- A.
Plugged oil pickup screen
- B.
Excessive oil dilution
- C.
Excessive engine valve lifter wear
- D.
Excessive engine bearing wear
- 8.Which of the following would be a likely cause excessive oil consumption?
- A.
Faulty PCV system
- B.
Worn piston rings
- C.
Neither A nor B
- D.
Both A and B
- 9.Technician A says high oil pressure wil cause valve cover gasket leaks. Technician B says low oil pressure can be caused by a faulty PCV system. Who is correct?
- A.
A only
- B.
B only
- C.
Both A and B
- D.
Neither A nor B
- 10.Technician A says that extended life coolant is more environmentaly friendly. Technician B says two year coolant (green) can be used to top off all automotive cooling systems. Who is correct?
- A.
A only
- B.
B only
- C.
Both A and B
- D.
Neither A nor B
- 11.In most automotive applications, the water pump is driven by the:
- A.
Flywheel
- B.
Camshaft
- C.
Crankshaft
- D.
Impeller
- 12.Why are modern cooling systems pressurized?
- A.
To raise coolant's boiling point
- B.
To prevent leaks
- C.
To move the coolant through the system
- D.
To prevent corrosion in the system
- 13.What is the most likely symptom of a vehicle with a non-operational electric cooling fan?
- A.
Overheating at highway speeds
- B.
Overheating at low speeds
- C.
Overheating at all speeds
- D.
Lack of heat from the heater core
- 14.The typical recommended mixture of water and antifreeze to form engine coolant is:
- A.
30/70
- B.
50/50
- C.
40/60
- D.
60/40
- 15.Most manufacturers recommend that cooling systems with conventional (green) antifreeze should be drained, flushed, and filled every:
- A.
Six months
- B.
Yearly
- C.
Two years
- D.
Five years
- 16.When pressure testing a cooling system, the pressure applied should be:
- A.
Pumped up as high as possible
- B.
Pumped up to the pressure cap rating
- C.
Pumped up to 10 psi
- D.
Released quickly
- 17.Technician a says a leaking head gasket could explain the presence of coolant in the eingine's crankcase. Technician B says that coolant that is a milky brown color has been contaminated with either engine or automatic transmission oil. Who is correct?
- A.
A only
- B.
B only
- C.
Both A and B
- D.
Neither A nor B
- 18.Technician A says an electric cooling fan may come on without the ignition being turned on. Technician B says an electric cooling fan may be controlled by the engine control computer. Who is correct?
- A.
A only
- B.
B only
- C.
Both A and B
- D.
Neither A nor B
- 19.What is a likely harmful effect of engine overheating?
- A.
Damage to combustion chamber parts
- B.
Damage in the crankcase
- C.
Poor gas mileage
- D.
High tailpipe emissions
- 20.What is a likely harmful effect of engine underheating?
- A.
High tailpipe emissions
- B.
Sludge builup in the oil
- C.
Poor gas mileage
- D.
All of the above
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