Question 1

A late model ignition system can supply 30,000 to 60,000 volts of electricity.

Accepted Answer

A) True 
 B)False  True

Question 2

Describe a waste spark ignition system.

Accepted Answer

One double-ended coil for every two cylinders. Each coil is connected to two companion cylinders. Companion cylinders are those cylinders whose pistons reach TDC simultaneously. When one cylinder is on the end of the compression stroke, the companion cylinder is on the end of the exhaust stroke. Each coil fires once per engine revolution. One spark plug ignites the fuel/air charge in one cylinder, the other spark is wasted on the exhaust stroke.

Question 3

Crankshaft sensors are being discussed. Technician A says the signal from a Hall-effect CKP cannot be used to synchronize fuel injector timing with the engine. Technician B says some early distributor ignition systems relied on photoelectric sensors to monitor crankshaft position. 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 B

Question 4

Which of the following is not a type of electronic ignition system?

Accepted Answer

A) DI (distributor ignition) 
B) MAF (mass airflow) 
C) DLI (distributorless ignition) 
D) DI (direct ignition) 
A) DI (distributor ignition) 
B) MAF (mass airflow) 
C) DLI (distributorless ignition) 
D) DI (direct ignition)

Question 5

The typical amount of secondary coil voltage required to jump the spark plug gap is ____ volts.

Accepted Answer

A) 500 
B) 1,000 
C) 10,000 
D) 50,000 
A) 500 
B) 1,000 
C) 10,000 
D) 50,000

Question 6

The heat range of a spark plug is indicated by ______ on the spark plug.

Accepted Answer

A) the color of the insulator ribs 
B) the number of insulator ribs 
C) a code within the plug number printed 
D) All the answers are correct. 
A) the color of the insulator ribs 
B) the number of insulator ribs 
C) a code within the plug number printed 
D) All the answers are correct.

Question 7

A magnetic pulse generator consists of two parts: a(n)____________________ and a pickup coil.

Accepted Answer

trigger wheel,reluct

Question 8

Technician A says a magnetic pulse generator type sensor generates a small AC voltage each time one of the machined slots in the trigger wheel passes by. Technician B says some ignition systems use dual Hall-effect sensors that produce a 3x and 18x/revolution pulse. 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 9

Technician A says spark plugs are part of the primary ignition circuit. Technician B says the battery is part of the secondary ignition circuit. 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 10

In EI systems using one ignition coil for every two cylinders, Technician A says two plugs fire at the same time, with one wasting the spark on the exhaust stroke. Technician B says one plug fires in the normal direction and the other in reversed polarity. 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 11

Technician A says a plug with a V-notch ground electrode will have two electric arcs jumping across the spark plug gap each time the spark plug fires. Technician B says a spark plug gap that is too wide requires higher voltage to jump the gap, which can cause a misfire. 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 12

Describe a dual plug system.

Accepted Answer

Each cylinder has a spark plug on the in

Question 13

EI systems are being discussed. Technician A says a waste spark system has one coil per cylinder. Technician B says a coil-on-plug system uses a double-ended coil. 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

When current flowing through a winding is at its maximum and the strength of its magnetic field is also at its maximum, the winding is said to be ____________________.

Accepted Answer

The answer of When current flowing through a winding is...

Question 15

Which of the following components is part of the primary ignition circuit?

Accepted Answer

A) spark plug 
B) spark plug cable 
C) ignition switch 
D) neutral safety switch 
A) spark plug 
B) spark plug cable 
C) ignition switch 
D) neutral safety switch

Question 16

Two technicians are discussing waste spark type ignition systems. Technician A says that half of the spark plugs in the system fire in reversed polarity [from the ground electrode to the center electrode]. Technician B says that the two spark plugs are connected in series with the coil. 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

The misfire monitor uses a high data rate CKP [crankshaft position] sensor to detect engine misfires, and the CMP [camshaft position] sensor is used to identify which cylinder is misfiring.

Accepted Answer

A) True 
 B)False

Question 18

What is spark plug reach?

Accepted Answer

The length of the spark plug s

Question 19

Describe a coil-on-plug ignition system.

Accepted Answer

It uses one coil for each cyli

Question 20

Spark plug cables contain fiber cores that act as electrical ____________________ in the secondary ignition circuit.

Accepted Answer

The answer of Spark plug cables contain fiber cores that...

Exam 26: Ignition Systems

A late model ignition system can supply 30,000 to 60,000 volts of electricity.

Describe a waste spark ignition system.

Crankshaft sensors are being discussed. Technician A says the signal from a Hall-effect CKP cannot be used to synchronize fuel injector timing with the engine. Technician B says some early distributor ignition systems relied on photoelectric sensors to monitor crankshaft position. Who is correct?

Which of the following is not a type of electronic ignition system?

The typical amount of secondary coil voltage required to jump the spark plug gap is ____ volts.

The heat range of a spark plug is indicated by ______ on the spark plug.

A magnetic pulse generator consists of two parts: a(n)____________________ and a pickup coil.

Technician A says a magnetic pulse generator type sensor generates a small AC voltage each time one of the machined slots in the trigger wheel passes by. Technician B says some ignition systems use dual Hall-effect sensors that produce a 3x and 18x/revolution pulse. Who is correct?

Technician A says spark plugs are part of the primary ignition circuit. Technician B says the battery is part of the secondary ignition circuit. Who is correct?

In EI systems using one ignition coil for every two cylinders, Technician A says two plugs fire at the same time, with one wasting the spark on the exhaust stroke. Technician B says one plug fires in the normal direction and the other in reversed polarity. Who is correct?

Technician A says a plug with a V-notch ground electrode will have two electric arcs jumping across the spark plug gap each time the spark plug fires. Technician B says a spark plug gap that is too wide requires higher voltage to jump the gap, which can cause a misfire. Who is correct?

Describe a dual plug system.

EI systems are being discussed. Technician A says a waste spark system has one coil per cylinder. Technician B says a coil-on-plug system uses a double-ended coil. Who is correct?

When current flowing through a winding is at its maximum and the strength of its magnetic field is also at its maximum, the winding is said to be ____________________.

Which of the following components is part of the primary ignition circuit?

The misfire monitor uses a high data rate CKP [crankshaft position] sensor to detect engine misfires, and the CMP [camshaft position] sensor is used to identify which cylinder is misfiring.

What is spark plug reach?

Describe a coil-on-plug ignition system.

Spark plug cables contain fiber cores that act as electrical ____________________ in the secondary ignition circuit.

Careers in the Automotive Industry

Workplace Skills

Basic Theories and Math

Automotive Systems

Hand Tools and Shop Equipment

Diagnostic Equipment and Special Tools

Working Safely in the Shop

Preventative Maintenance and Basic Services

Automotive Engine Designs and Diagnosis

Engine Disassembly and Cleaning

Lower-End Theory and Service

Upper-End Theory and Service

Engine Sealing and Reassembly

Lubricating and Cooling Systems

Basics of Electrical Systems

General Electrical System Diagnostics and Service

Batteries: Theory, Diagnosis, and Service

Starting and Motor Systems

Charging Systems

Lighting Systems

Instrumentation and Information Displays

Basics of Electronics and Computer Systems

Electrical Accessories

Engine Performance Systems

Detailed Diagnosis and Sensors

Ignition System Diagnosis and Service

Gasoline, Diesel and Other Fuels

Fuel Delivery Systems

Electronic Fuel Injection

Fuel Injection Diagnosis and Service

Intake and Exhaust Systems

Emission Control Systems

Emission Control Diagnosis and Service

Hybrid Vehicles

Electric Vehicles

Clutches

Manual Transmissions and Transaxles

Manual Transmission and Transaxle Service

Drive Axles and Differentials

Automatic Transmissions and Transaxles

Electronic Automatic Transmissions

Automatic Transmission and Transaxle Service

Four- and All-Wheel Drive

Tires and Wheels

Suspension Systems

Steering Systems

Restraint Systems: Theory, Diagnosis, and Service

Wheel Alignment

Brake Systems

Drum Brakes

Disc Brakes

Antilock Brake, Traction Control, and Stability Control Systems

Heating and Air Conditioning

Heating and Air Conditioning Diagnosis and Service

Filters