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WorksheetsIgnition systems quiz
Total questions: 20
Worksheet time: 10mins
Recall the core purpose of an automotive ignition system based on the study guide excerpt: What is its primary job?
To lubricate engine moving parts at high RPM
To ignite the air–fuel mixture in the combustion chamber at the correct time
To cool the engine by circulating coolant through the block
To meter fuel into the intake manifold for each cylinder
Which ignition system uses mechanical points and a condenser to control current flow to the ignition coil and relies on a rotor and distributor cap to send voltage to the correct spark plug?
Electronic Ignition (EI)
Distributorless Ignition System (DIS)
Conventional (Distributor) Ignition System
Coil-On-Plug (COP) Ignition System
Select the statement that best distinguishes Electronic Ignition (EI) from the conventional distributor system.
EI replaces mechanical points with electronic sensors and control modules, improving reliability and precision of timing.
EI adds more moving parts to the distributor to stabilize spark delivery.
EI eliminates the ignition coil and fires spark plugs directly from the battery.
EI relies on coil packs controlled by the ECM and has no sensors.
A technician wants fewer moving parts than a distributor while serving one or two cylinders per coil. Which system matches this description?
Conventional (Distributor) Ignition System
Electronic Ignition (EI)
Distributorless Ignition System (DIS) using coil packs
Coil-On-Plug (COP) system with one shared coil
Which ignition system mounts an individual ignition coil directly on each spark plug to provide the most accurate timing and highest efficiency?
Conventional (Distributor)
Electronic Ignition (EI)
Distributorless Ignition System (DIS)
Coil-On-Plug (COP)
Which component converts low battery voltage to the high voltage needed for spark generation in the ignition system?
Battery
Ignition Coil
Spark Plug
Plug Wires / Coil Boots
In the basic operation sequence, what happens during the primary circuit stage?
High voltage jumps the spark plug gap to ignite the mixture.
A sensor interrupts current to induce voltage in the secondary winding.
Battery voltage flows through the ignition switch to the ignition coil’s primary winding.
The ECM/PCM sets timing based solely on camshaft position.
Which sensor specifically monitors crankshaft speed and position for timing control?
Camshaft Position Sensor (CMP)
Crankshaft Position Sensor (CKP)
Ignition Control Module (ICM)
ECM/PCM
During the triggering step, what action initiates the induction of high voltage in the secondary winding?
Closing the spark plug gap
Interrupting current flow in the primary circuit via a sensor or switch
Raising battery voltage directly to 40,000V
Delivering high voltage from the coil to the plugs
Which statement best defines ignition timing as presented?
It is how strong the spark is at the plug.
It refers to when the spark occurs in relation to piston position (Top Dead Center).
It is the speed at which the crankshaft rotates during firing.
It describes how voltage travels through plug wires.
What is the function of the Spark Plug in the system description?
Controls primary circuit current and timing signals
Creates an electric arc to ignite the air-fuel mixture in each cylinder
Provides camshaft position data to synchronize spark with valve timing
Supplies voltage to the ignition system
Which component delivers high voltage from the coil to the spark plugs?
Ignition Control Module (ICM)
Plug Wires / Coil Boots
Battery
ECM/PCM
Which statement best describes the effect of ignition timing on engine performance? Choose the most accurate option based on the provided definitions.
Proper timing ensures efficient combustion and overall performance.
Ignition timing only affects emissions and not power.
Advanced timing always reduces fuel economy regardless of conditions.
Retarded timing increases power without influencing spark occurrence.
According to the list of common issues, which condition is most likely if the engine cranks but has difficulty starting and sometimes stalls?
Faulty ignition coil, module, or crankshaft sensor.
Correct ignition timing advance.
Clean and properly gapped spark plugs.
Strong and consistent spark.
Which component converts low voltage to high voltage required to create a spark?
Primary Circuit
Ignition Coil
Rotor
Condenser (Capacitor)
In ignition system terminology, what is the primary circuit responsible for?
Delivering high-voltage spark energy to the plugs.
Carrying low-voltage battery current in the ignition system.
Mechanically routing spark voltage to each cylinder.
Preventing arcing across contact points in older systems.
Which sensor monitors crankshaft rotation to determine ignition timing?
Camshaft Position Sensor (CMP)
Crankshaft Position Sensor (CKP)
Trigger Wheel / Tone Ring
ECM (Engine Control Module)
Detonation (knock) is best defined as which of the following?
Controlled ignition advance just before top dead center.
Uncontrolled explosion of the air–fuel mixture due to incorrect timing.
Normal spark discharge across the plug gap.
A system where each spark plug has its own dedicated coil.
Which term describes the time the ignition coil is charged before spark discharge?
Dwell
Spark Plug Gap
Ignition Timing Advance
Distributor
What role does the ECM (Engine Control Module) play in ignition and fuel systems?
It is the toothed wheel used by sensors to detect engine position.
It electronically controls ignition and fuel systems.
It is the rotating arm inside the distributor directing voltage to plug wires.
It sets the mechanical routing of spark voltage to each cylinder.
