Question 1

During engine warm-up, when the thermostat is closed, _____.

Accepted Answer

A) coolant flows through the radiator 
B) coolant flows through the bypass passage 
C) both A and B 
D) neither A nor B 
A) coolant flows through the radiator 
B) coolant flows through the bypass passage 
C) both A and B 
D) neither A nor B B

Question 2

Technician A says an electric cooling fan may come on at any time without warning, even if the engine is not running. Technician B says an electric cooling fan may be controlled by the engine control computer. Who is correct?

Accepted Answer

A) A only 
B) B only 
C) both A and B 
D) neither A nor B 
A) A only 
B) B only 
C) both A and B 
D) neither A nor B C

Question 3

Sludge is being discussed. Technician A says sludge results from the oxidation of oil. Technician B says a slight buildup on the underside of the oil fill cap is normal. Who is correct?

Accepted Answer

A) A only 
B) B only 
C) both A and B 
D) neither A nor B 
A) A only 
B) B only 
C) both A and B 
D) neither A nor B C

Question 4

What is the function of a radiator pressure cap?

Accepted Answer

To keep the coolant from splas

Question 5

What is the purpose of a radiator petcock?

Accepted Answer

It allows

Question 6

If the fan shroud is removed from a vehicle, _____.

Accepted Answer

A) the engine will overheat during prolonged idling 
B) the engine will overheat at highway speeds 
C) both A and B 
D) neither A nor B 
A) the engine will overheat during prolonged idling 
B) the engine will overheat at highway speeds 
C) both A and B 
D) neither A nor B

Question 7

Most manufacturers recommend that cooling systems should be drained, flushed, and filled every ______.

Accepted Answer

A) six months 
B) year 
C) two to four years 
D) five years 
A) six months 
B) year 
C) two to four years 
D) five years

Question 8

What is the function of the thermostat?

Accepted Answer

The thermostat controls the minimum oper

Question 9

Engine oil passages are often referred to as oil ways or ____________________

Accepted Answer

The answer of Engine oil passages are often referred to...

Question 10

The petcock valve is located _____.

Accepted Answer

A) at the bottom of the radiator 
B) at the base of thermostat housing 
C) at the bottom of the heater core 
D) below the water pump 
A) at the bottom of the radiator 
B) at the base of thermostat housing 
C) at the bottom of the heater core 
D) below the water pump

Question 11

ECD (electrochemical degradation)usually occurs within two inches of the hose end.

Accepted Answer

A) True 
 B)False

Question 12

Identify causes of water pump failure.

Accepted Answer

Wear; a bent fan; a

Question 13

Technician A says high crankcase pressure can be caused by worn piston rings. Technician B says low crankcase pressure can be caused by a faulty PCV system. Who is correct?

Accepted Answer

A) A only 
B) B only 
C) both A and B 
D) neither A nor B 
A) A only 
B) B only 
C) both A and B 
D) neither A nor B

Question 14

A(n)____________________ cooling system has an expansion tank or recovery tank.

Accepted Answer

The answer of A(n)____________________ cooling system has an expansion tank...

Question 15

When using a combustion gas leak check: the color of the fluid turns from blue to ____________________ if there are combustion gases in the coolant.

Accepted Answer

The answer of When using a combustion gas leak check:...

Question 16

Technician A says a cooling system pressure tester is used to test for leaks in the radiator, hoses, water pump, thermostat, and engine assembly. Technician B say the cooling system pressure tester is used to check the operation of the relief valve in the radiator cap. Who is correct?

Accepted Answer

A) A only 
B) B only 
C) both A and B 
D) neither A nor B 
A) A only 
B) B only 
C) both A and B 
D) neither A nor B

Question 17

Water pump failure can be caused by a bent fan blade.

Accepted Answer

A) True 
 B)False

Question 18

The ____________________ is used to measure the level of oil in the oil pan.

Accepted Answer

The answer of The ____________________ is used to measure the...

Question 19

One purpose of the oil pan is cooling the oil through its contact with the outside air.

Accepted Answer

A) True 
 B)False

Question 20

Two technicians are discussing a vehicle with an overheating problem. There are no leaks, internal or external. The belts are in good condition, and the radiator has been removed and flow tested. Everything appears to be in good condition. A new thermostat was installed, but it did not cure the problem. What is most likely the problem?

Accepted Answer

A) The impeller could be slipping on the water pump shaft. 
B) The impeller blades could be corroded. 
C) The impeller could be slipping on the water pump shaft or the impeller blades could be corroded. 
D) None of the answers is correct. 
A) The impeller could be slipping on the water pump shaft. 
B) The impeller blades could be corroded. 
C) The impeller could be slipping on the water pump shaft or the impeller blades could be corroded. 
D) None of the answers is correct.

Exam 14: Lubricating and Cooling Systems

During engine warm-up, when the thermostat is closed, _____.

Technician A says an electric cooling fan may come on at any time without warning, even if the engine is not running. Technician B says an electric cooling fan may be controlled by the engine control computer. Who is correct?

Sludge is being discussed. Technician A says sludge results from the oxidation of oil. Technician B says a slight buildup on the underside of the oil fill cap is normal. Who is correct?

What is the function of a radiator pressure cap?

What is the purpose of a radiator petcock?

If the fan shroud is removed from a vehicle, _____.

Most manufacturers recommend that cooling systems should be drained, flushed, and filled every ______.

What is the function of the thermostat?

Engine oil passages are often referred to as oil ways or ____________________

The petcock valve is located _____.

ECD (electrochemical degradation)usually occurs within two inches of the hose end.

Identify causes of water pump failure.

Technician A says high crankcase pressure can be caused by worn piston rings. Technician B says low crankcase pressure can be caused by a faulty PCV system. Who is correct?

A(n)____________________ cooling system has an expansion tank or recovery tank.

When using a combustion gas leak check: the color of the fluid turns from blue to ____________________ if there are combustion gases in the coolant.

Technician A says a cooling system pressure tester is used to test for leaks in the radiator, hoses, water pump, thermostat, and engine assembly. Technician B say the cooling system pressure tester is used to check the operation of the relief valve in the radiator cap. Who is correct?

Water pump failure can be caused by a bent fan blade.

The ____________________ is used to measure the level of oil in the oil pan.

One purpose of the oil pan is cooling the oil through its contact with the outside air.

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