Engine Performance 1: Ignition Systems
Final UPDATED ACTUAL Questions and
CORRECT Answers
The non-electronic spark advance of an engine is not increasing as engine rpm increases. Technician A
says the vacuum advance unit may have a leaking diaphragm. Technician B says the centrifugal advance
weights may be stuck. Who is correct? - CORRECT ANSWER - Tech B
A loose spark plug is likely to cause: - CORRECT ANSWER - Premature ignition coil failure
A vehicle with an ignition system triggered by a magnetic pulse generator will not start. Technician A
says that the air gap should be checked using a go no-go stainless feeler gauge. Technician B says that the
air gap is not adjustable. Who is correct? - CORRECT ANSWER - Both Technicians A and B
All of the following are types of electronic ignition systems (EI) except: - CORRECT ANSWER -
Distributor
An engine's initial timing is set at 6 degrees ATDC; the specification is 3 degrees BTDC. Technician A
says the timing is overly advanced and must be retarded 9 degrees. Technician B says the timing is overly
retarded and must be advanced. Who is correct? - CORRECT ANSWER - Tech B
An ohmmeter placed across the primary terminals of an ignition coil indicates 896 k ohms. Technician A
says the coil windings are shorted. Technician B says the coil needs to be replaced. Who is correct? -
CORRECT ANSWER - Tech B
In the diagram of the V-6 engine, which color represents cylinder #1? - CORRECT ANSWER -
Orange
Spark plugs are being discussed. Technician A says to remove the plugs when the engine is at normal
operating temperature. Technician B says to use a torque wrench to tighten them. Who is correct? -
CORRECT ANSWER - Tech B
, The dwell section of a primary scope pattern represents: - CORRECT ANSWER - the amount of
time that the primary current is turned on
Too high of a heat range spark plug will: - CORRECT ANSWER - decrease plug life
When diagnosing a no-start condition on a vehicle with no spark, Technician A says that the ignition
module should be tested for a digital switching signal. Technician B says the Hall effect CMP sensor
should be tested for a digital switching signal. Who is right? - CORRECT ANSWER - Both
in the diagram of the V-6 engine, which color represents cylinder #4? - CORRECT ANSWER -
A 4 cylinder engine has the following firing voltages: 6 KV, 12 KV, 7 KV, and 7 KV. Technician A
states that all plugs are firing within the normal range. Technician B states that there is too much variation
between the highest and lowest values. Who is correct? - CORRECT ANSWER - Both
A 6 cylinder engine with a coil on plug ignition system has how many coils? - CORRECT
ANSWER -6
A 6 cylinder engine with a distributor ignition system has how many coils? - CORRECT
ANSWER -1
A 6 cylinder engine with a waste spark system has how many coils? - CORRECT ANSWER -3
A coil is being checked, with the following results. What does the reading mean? - CORRECT
ANSWER - The coil secondary is open
A coil is being tested using current ramping. The waveform should ________. - CORRECT
ANSWER - Start off flat then slope upward
A compression-sensing ignition system uses a ________ type ignition. - CORRECT ANSWER -
waste-spark
Final UPDATED ACTUAL Questions and
CORRECT Answers
The non-electronic spark advance of an engine is not increasing as engine rpm increases. Technician A
says the vacuum advance unit may have a leaking diaphragm. Technician B says the centrifugal advance
weights may be stuck. Who is correct? - CORRECT ANSWER - Tech B
A loose spark plug is likely to cause: - CORRECT ANSWER - Premature ignition coil failure
A vehicle with an ignition system triggered by a magnetic pulse generator will not start. Technician A
says that the air gap should be checked using a go no-go stainless feeler gauge. Technician B says that the
air gap is not adjustable. Who is correct? - CORRECT ANSWER - Both Technicians A and B
All of the following are types of electronic ignition systems (EI) except: - CORRECT ANSWER -
Distributor
An engine's initial timing is set at 6 degrees ATDC; the specification is 3 degrees BTDC. Technician A
says the timing is overly advanced and must be retarded 9 degrees. Technician B says the timing is overly
retarded and must be advanced. Who is correct? - CORRECT ANSWER - Tech B
An ohmmeter placed across the primary terminals of an ignition coil indicates 896 k ohms. Technician A
says the coil windings are shorted. Technician B says the coil needs to be replaced. Who is correct? -
CORRECT ANSWER - Tech B
In the diagram of the V-6 engine, which color represents cylinder #1? - CORRECT ANSWER -
Orange
Spark plugs are being discussed. Technician A says to remove the plugs when the engine is at normal
operating temperature. Technician B says to use a torque wrench to tighten them. Who is correct? -
CORRECT ANSWER - Tech B
, The dwell section of a primary scope pattern represents: - CORRECT ANSWER - the amount of
time that the primary current is turned on
Too high of a heat range spark plug will: - CORRECT ANSWER - decrease plug life
When diagnosing a no-start condition on a vehicle with no spark, Technician A says that the ignition
module should be tested for a digital switching signal. Technician B says the Hall effect CMP sensor
should be tested for a digital switching signal. Who is right? - CORRECT ANSWER - Both
in the diagram of the V-6 engine, which color represents cylinder #4? - CORRECT ANSWER -
A 4 cylinder engine has the following firing voltages: 6 KV, 12 KV, 7 KV, and 7 KV. Technician A
states that all plugs are firing within the normal range. Technician B states that there is too much variation
between the highest and lowest values. Who is correct? - CORRECT ANSWER - Both
A 6 cylinder engine with a coil on plug ignition system has how many coils? - CORRECT
ANSWER -6
A 6 cylinder engine with a distributor ignition system has how many coils? - CORRECT
ANSWER -1
A 6 cylinder engine with a waste spark system has how many coils? - CORRECT ANSWER -3
A coil is being checked, with the following results. What does the reading mean? - CORRECT
ANSWER - The coil secondary is open
A coil is being tested using current ramping. The waveform should ________. - CORRECT
ANSWER - Start off flat then slope upward
A compression-sensing ignition system uses a ________ type ignition. - CORRECT ANSWER -
waste-spark
