Engine Performance 1 Final Questions
and Answers 100% Pass
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? ✔✔Technician B only
A loose spark plug is likely to cause: ✔✔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? ✔✔Both Technicians A and
B
All of the following are types of electronic ignition systems (EI) except: ✔✔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? ✔✔Technician B only
,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? ✔✔Technician B only
In the diagram of the V-6 engine, which color represents cylinder #1? ✔✔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? ✔✔Technician B only
The dwell section of a primary scope pattern represents: ✔✔the amount of time that the primary
current is turned on
Too high of a heat range spark plug will: ✔✔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? ✔✔Both A and B
, in the diagram of the V-6 engine, which color represents cylinder #4? ✔✔none of the above
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? ✔✔Both
Technicians
A 6 cylinder engine with a coil on plug ignition system has how many coils? ✔✔6
A 6 cylinder engine with a distributor ignition system has how many coils? ✔✔1
A 6 cylinder engine with a waste spark system has how many coils? ✔✔3
A coil is being checked, with the following results. What does the reading mean? OL ✔✔The
coil secondary is open.
A coil is being tested using current ramping. The waveform should ________. ✔✔Start off flat
then slope upward
and Answers 100% Pass
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? ✔✔Technician B only
A loose spark plug is likely to cause: ✔✔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? ✔✔Both Technicians A and
B
All of the following are types of electronic ignition systems (EI) except: ✔✔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? ✔✔Technician B only
,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? ✔✔Technician B only
In the diagram of the V-6 engine, which color represents cylinder #1? ✔✔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? ✔✔Technician B only
The dwell section of a primary scope pattern represents: ✔✔the amount of time that the primary
current is turned on
Too high of a heat range spark plug will: ✔✔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? ✔✔Both A and B
, in the diagram of the V-6 engine, which color represents cylinder #4? ✔✔none of the above
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? ✔✔Both
Technicians
A 6 cylinder engine with a coil on plug ignition system has how many coils? ✔✔6
A 6 cylinder engine with a distributor ignition system has how many coils? ✔✔1
A 6 cylinder engine with a waste spark system has how many coils? ✔✔3
A coil is being checked, with the following results. What does the reading mean? OL ✔✔The
coil secondary is open.
A coil is being tested using current ramping. The waveform should ________. ✔✔Start off flat
then slope upward
