Question 1

To bleed a cooling system without an airlift, remove a heater hose at the highest place in the system while filling the ____________________.

Accepted Answer

radiator

Question 2

Older vehicles had radiator tanks made of brass, soldered to a copper radiator core. If the fins of the core are in good condition, a restricted copper/brass radiator can be disassembled and ____________________ by a shop specializing in radiator repairs.

Accepted Answer

rodded out

Question 3

Radiator cleaners used to remove rust and scale are alkaline.

Accepted Answer

A) True 
 B)False  False

Question 4

How does the heater core receive engine coolant?

Accepted Answer

The heater core receives engin

Question 5

All of the following statements are true EXCEPT:

Accepted Answer

A)  aluminum oxide is very abrasive; it is what sand paper is made of. 
B)  if there is aluminum oxide in the cooling system, it looks like black sand beads. 
C)  when flushing a cooling system with aluminum oxide contamination, heat the engine to operating temperature and reflush the system at least three times, heating to full temperature each time. 
D)  using a commercial chemical cleaner, the radiator can be flushed but it must be removed from the car. 
A)  aluminum oxide is very abrasive; it is what sand paper is made of. 
B)  if there is aluminum oxide in the cooling system, it looks like black sand beads. 
C)  when flushing a cooling system with aluminum oxide contamination, heat the engine to operating temperature and reflush the system at least three times, heating to full temperature each time. 
D)  using a commercial chemical cleaner, the radiator can be flushed but it must be removed from the car.

Question 6

What is the MOST-Likely temperature at which one popular hybrid system used by several manufacturers stores heated coolant for up to three days?

Accepted Answer

A)  1450F 
B)  1670F 
C)  1760F 
D)  1930F 
A)  1450F 
B)  1670F 
C)  1760F 
D)  1930F

Question 7

Most thermostats start to open at between ____.

Accepted Answer

A)  500F and 1000F 
B)  1880F and 1950F 
C)  1900F and 2000F 
D)  2500F and 3000F 
A)  500F and 1000F 
B)  1880F and 1950F 
C)  1900F and 2000F 
D)  2500F and 3000F

Question 8

All of the following statements are true EXCEPT:

Accepted Answer

A)  ethylene glycol can be ignited by a flame at 1000F. 
B)  ethylene glycol is a poison. 
C)  be careful when handling extremely cold coolant. 
D)  research by General Motors has shown that an explosion can actually occur if a mist of pressurized ethylene glycol coolant mixture is sprayed on an open flame. 
A)  ethylene glycol can be ignited by a flame at 1000F. 
B)  ethylene glycol is a poison. 
C)  be careful when handling extremely cold coolant. 
D)  research by General Motors has shown that an explosion can actually occur if a mist of pressurized ethylene glycol coolant mixture is sprayed on an open flame.

Question 9

A radiator can be damaged by a collision with the cooling fan blade if a fan clutch or water pump bearing fails.

Accepted Answer

A) True 
 B)False

Question 10

The ____________________ test provides another means of testing for leakage of exhaust gas into the cooling system.

Accepted Answer

block chec

Question 11

What items would you check on a radiator cap?

Accepted Answer

- Check the rubber seal to see that it i

Question 12

Which of the following statements is LEAST-Likely true?

Accepted Answer

A)  Ethylene glycol coolant is mixed with purified water until its concentration is correct. 
B)  When coolant strength has been allowed to become weak or additives are depleted, a coolant flush and change is recommended. 
C)  Draining off a quart of coolant and adding straight coolant can weaken a slightly weak concentration. 
D)  Coolant in too high a concentration can be further diluted with purified water. 
A)  Ethylene glycol coolant is mixed with purified water until its concentration is correct. 
B)  When coolant strength has been allowed to become weak or additives are depleted, a coolant flush and change is recommended. 
C)  Draining off a quart of coolant and adding straight coolant can weaken a slightly weak concentration. 
D)  Coolant in too high a concentration can be further diluted with purified water.

Question 13

What is the MOST-Likely material that will not corrode and that routinely replaces steel core plugs in cast iron blocks?

Accepted Answer

A)  copper 
B)  brass 
C)  aluminum 
D)  lead 
A)  copper 
B)  brass 
C)  aluminum 
D)  lead

Question 14

If the engine stops with a piston down in its cylinder and the valves are closed, the engine will be ____ and the crankshaft will not be able to turn.

Accepted Answer

A)  overheated 
B)  blocked 
C)  hydrolocked 
D)  cooled 
A)  overheated 
B)  blocked 
C)  hydrolocked 
D)  cooled

Question 15

What are the steps involved in physically testing a fan clutch?

Accepted Answer

1. First, with the engine off, turn the

Question 16

A plugged radiator will cause overheating at freeway speeds.

Accepted Answer

A) True 
 B)False

Question 17

When there is an internal leak, coolant will flow into the cylinder during the ____________________ stroke and when the engine is off.

Accepted Answer

The answer of When there is an internal leak, coolant...

Question 18

While having a discussion, Technician A says that a loose water pump drive belt can cause overheating on an older engine without a spring-loaded belt tensioner. If this happens, he states, the belt will probably squeal as it slips. Technician B say that if that is the case, the charging system light on the instrument panel will probably illuminate and the battery charge level will drop. 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 19

Which of the following statements is LEAST-Likely true?

Accepted Answer

A)  A recovery tank is a good feature to add to an older car if it does not already have one. 
B)  When a tank vibrates on rough roads, it can be torn from its mount. 
C)  If the radiator cap needs to be replaced on a recovery tank system, be sure the new cap includes a seal that works against the top of the filler neck, too. 
D)  One gallon of water weighs about 5 pounds. 
A)  A recovery tank is a good feature to add to an older car if it does not already have one. 
B)  When a tank vibrates on rough roads, it can be torn from its mount. 
C)  If the radiator cap needs to be replaced on a recovery tank system, be sure the new cap includes a seal that works against the top of the filler neck, too. 
D)  One gallon of water weighs about 5 pounds.

Question 20

Coolant loses some of its protective ability during use and can become corrosive from contamination.

Accepted Answer

A) True 
 B)False

Exam 21: Cooling System Service

To bleed a cooling system without an airlift, remove a heater hose at the highest place in the system while filling the ____________________.

Older vehicles had radiator tanks made of brass, soldered to a copper radiator core. If the fins of the core are in good condition, a restricted copper/brass radiator can be disassembled and ____________________ by a shop specializing in radiator repairs.

Radiator cleaners used to remove rust and scale are alkaline.

How does the heater core receive engine coolant?

All of the following statements are true EXCEPT:

What is the MOST-Likely temperature at which one popular hybrid system used by several manufacturers stores heated coolant for up to three days?

Most thermostats start to open at between ____.

All of the following statements are true EXCEPT:

A radiator can be damaged by a collision with the cooling fan blade if a fan clutch or water pump bearing fails.

The ____________________ test provides another means of testing for leakage of exhaust gas into the cooling system.

What items would you check on a radiator cap?

Which of the following statements is LEAST-Likely true?

What is the MOST-Likely material that will not corrode and that routinely replaces steel core plugs in cast iron blocks?

If the engine stops with a piston down in its cylinder and the valves are closed, the engine will be ____ and the crankshaft will not be able to turn.

What are the steps involved in physically testing a fan clutch?

A plugged radiator will cause overheating at freeway speeds.

When there is an internal leak, coolant will flow into the cylinder during the ____________________ stroke and when the engine is off.

Which of the following statements is LEAST-Likely true?

Coolant loses some of its protective ability during use and can become corrosive from contamination.

Introduction to the Automobile

Automotive Careers and Technician Certification

Shop Safety

Shop Management, Service Records, and Parts

Locating Service Information and Specifications

Measuring Tools and Systems

Hardware, Fasteners, Drills, and Thread Repair

Shop Tools

General Shop Equipment

Cleaning Equipment and Methods

Lifting Equipment and Air Compressors

Engine Lubrication

Underhood and Body Inspection Car on Ground

Undercar Inspection and Service

Introduction to the Engine

Engine Classifications and Advanced Transportation Technologies

Engine Size and Measurements

Engine Upper End

Engine Lower End and Lubrication System Theory

Cooling System Theory

Automotive Belts

Automotive Hoses

Automotive Plumbing: Tubing and Pipe

Basic Electrical System Theory and Repairs

Battery Fundamentals

Battery Service

Starting System Fundamentals

Starting System Service

Charging System Fundamentals

Charging System Service

Lighting and Wiring Fundamentals

Lighting and Wiring Service

Safety, Security, Comfort Systems, and Electrical Accessories

Heating and Air Conditioning Fundamentals

Heating and Air Conditioning Service

Ignition System Fundamentals

Ignition System Service

Fuels and Alternative Fuels

Fuel System Fundamentals

Fuel System Service

Intake and Exhaust Systems, Turbochargers and Superchargers

Emission Control System Fundamentals

Emission Control System Service

Electronics and Computer Systems Fundamentals

Electronics and Computer Systems Service

Advanced Emissions and On-Board Diagnostics Odb

Diagnosing Engine Performance Problems

Diagnosing Engine Mechanical Problems

Engine Removal and Disassembly

Engine Sealing, Gaskets, Fastener Torque

Engine Diagnosis and Service: Cylinder Head and Valvetrain

Engine Diagnosis and Service: Block, Crankshaft, Bearings, and Lubrication System

Engine Diagnosis and Service: Piston, Piston Rings, Connecting Rod, Engine Balancing

Ordering Parts, Short and Long Blocks, Engine Assembly

Engine Installation, Break In, and In-Chassis Repairs

Brake Fundamentals

Brakes Service

Anti-Lock Brakes Traction and Stability Control

Bearings, Seals, and Greases

Tire and Wheel Theory