ENGINE TUNE UP STUDY GUIDE 2026 FULL
COVERAGE READY
◉ T/F Conventional ignition systems are capable of producing
higher electrical energy than distributorless ignition systems (25)
Answer: False
◉ T/F A spark plug's ceramic core or insulator acts as a heat
conductor (25) Answer: True
◉ T/F An EI system's multiple coils allow for increased current flow
and charge time (25) Answer: True
◉ T/F A late-model ignition can supply 30 000 to 60 000 volts of
electricity (25) Answer: True
◉ T/F Most distributor-equipped ignition systems use one ignition
coil for each cylinder (25) Answer: False
◉ T/F A distributor cap can be installed in only on position on the
distributor housing (25) Answer: True
,◉ T/F until 1994, all ignition systems used a distributor cap and
rotor assembly (25) Answer: False
◉ T/F A spark plug fires before the piston reaches top dead centre
(TDC) (25) Answer: True
◉ T/F In an EI system, the ignition coils are contained in a metal
housing filled with oil to help cool the windings (25) Answer: False
◉ What is the period of time during which current flows in an
ignition coil? (25) Answer: Dwell
◉ In the secondary circuit, what is the function of modern ignition
cables that contain carbon fibre cores? (25) Answer: Resistor
◉ What is the function of all ignition systems? (25) Answer: They
time the arrival of the spark to coincide with the movement of the
engine's pistons
◉ Which ignition system component's performance is affected by
reach, heat range, and air gap? (25) Answer: Spark plugs
◉ Which type of engine position sensor produces a square wave
signal? (25) Answer: Hall-effect sensor
,◉ Which operating condition will require the greatest voltage at the
spark plugs? (25) Answer: Under heavy load
◉ The main difference between COP and other ignition systems is
that each coil is mounted [?] of the spark plug. (25) Answer: Atop
◉ Repetitive spark is often used at low engine rpm to improve idle
quality and reduce [?] (25) Answer: Exhaust emissions
◉ Photoelectric sensors that monitor engine position can also be
called [?] sensors (25) Answer: Optical
◉ A coil-over-plug (COP) ignition system relies on a single assembly
of [?] and [?] (25) Answer: An ignition coil, spark plug
◉ Some spark plugs have [?] electrodes to extend the life of the plug
(25) Answer: Platinum
◉ Additional spark duration on EI systems helps to prevent cylinder
misfiring due to [?] (25) Answer: Leaner air/fuel ratios
◉ The [?] on a spark plug help prevent electric arcing on the outside
of the insulator (25) Answer: Ribs
, ◉ If the required voltage to fire a spark plug is greater than the
available voltage, the result is known as a(n) [?] condition (25)
Answer: Misfiring
◉ Electronic ignition systems with a coil for every two spark plugs
use the [?] spark method of spark distribution (25) Answer: Waste
◉ The ignition coil is essentially a pulse [?] (25) Answer:
Transformer
◉ What happens when the low-voltage current flow in the coil
primary winding is interrupted by the switching device? (25)
Answer: The magnetic field collapses
◉ What occurs when a spark plug with multiple ground electrodes
are fired? (25) Answer: The spark will travel to the electrode
offering the path of least resistance
◉ Why is high voltage needed to establish a spark across the gap of a
spark plug? (25) Answer: Because of high resistance of the air gap
between the electrodes
◉ What does the use of one ignition coil per cylinder produce? (25)
Answer: Less time for the spark to be produced
COVERAGE READY
◉ T/F Conventional ignition systems are capable of producing
higher electrical energy than distributorless ignition systems (25)
Answer: False
◉ T/F A spark plug's ceramic core or insulator acts as a heat
conductor (25) Answer: True
◉ T/F An EI system's multiple coils allow for increased current flow
and charge time (25) Answer: True
◉ T/F A late-model ignition can supply 30 000 to 60 000 volts of
electricity (25) Answer: True
◉ T/F Most distributor-equipped ignition systems use one ignition
coil for each cylinder (25) Answer: False
◉ T/F A distributor cap can be installed in only on position on the
distributor housing (25) Answer: True
,◉ T/F until 1994, all ignition systems used a distributor cap and
rotor assembly (25) Answer: False
◉ T/F A spark plug fires before the piston reaches top dead centre
(TDC) (25) Answer: True
◉ T/F In an EI system, the ignition coils are contained in a metal
housing filled with oil to help cool the windings (25) Answer: False
◉ What is the period of time during which current flows in an
ignition coil? (25) Answer: Dwell
◉ In the secondary circuit, what is the function of modern ignition
cables that contain carbon fibre cores? (25) Answer: Resistor
◉ What is the function of all ignition systems? (25) Answer: They
time the arrival of the spark to coincide with the movement of the
engine's pistons
◉ Which ignition system component's performance is affected by
reach, heat range, and air gap? (25) Answer: Spark plugs
◉ Which type of engine position sensor produces a square wave
signal? (25) Answer: Hall-effect sensor
,◉ Which operating condition will require the greatest voltage at the
spark plugs? (25) Answer: Under heavy load
◉ The main difference between COP and other ignition systems is
that each coil is mounted [?] of the spark plug. (25) Answer: Atop
◉ Repetitive spark is often used at low engine rpm to improve idle
quality and reduce [?] (25) Answer: Exhaust emissions
◉ Photoelectric sensors that monitor engine position can also be
called [?] sensors (25) Answer: Optical
◉ A coil-over-plug (COP) ignition system relies on a single assembly
of [?] and [?] (25) Answer: An ignition coil, spark plug
◉ Some spark plugs have [?] electrodes to extend the life of the plug
(25) Answer: Platinum
◉ Additional spark duration on EI systems helps to prevent cylinder
misfiring due to [?] (25) Answer: Leaner air/fuel ratios
◉ The [?] on a spark plug help prevent electric arcing on the outside
of the insulator (25) Answer: Ribs
, ◉ If the required voltage to fire a spark plug is greater than the
available voltage, the result is known as a(n) [?] condition (25)
Answer: Misfiring
◉ Electronic ignition systems with a coil for every two spark plugs
use the [?] spark method of spark distribution (25) Answer: Waste
◉ The ignition coil is essentially a pulse [?] (25) Answer:
Transformer
◉ What happens when the low-voltage current flow in the coil
primary winding is interrupted by the switching device? (25)
Answer: The magnetic field collapses
◉ What occurs when a spark plug with multiple ground electrodes
are fired? (25) Answer: The spark will travel to the electrode
offering the path of least resistance
◉ Why is high voltage needed to establish a spark across the gap of a
spark plug? (25) Answer: Because of high resistance of the air gap
between the electrodes
◉ What does the use of one ignition coil per cylinder produce? (25)
Answer: Less time for the spark to be produced
