Engine Performance 1 Final UPDATED ACTUAL Questions and CORRECT Answers

Engine Performance 1 Final UPDATED
ACTUAL Questions and CORRECT
Answers
Technician B only - CORRECT ANSWER - 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?



Premature ignition coil failure - CORRECT ANSWER - A loose spark plug is likely to cause:



Both Technicians A and B - CORRECT ANSWER - 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?



distributor - CORRECT ANSWER - All of the following are types of electronic ignition systems
(EI) except:



Technician B only - CORRECT ANSWER - 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 - CORRECT ANSWER - 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?



orange - CORRECT ANSWER - In the diagram of the V-6 engine, which color represents cylinder
#1?



Technician B only - CORRECT ANSWER - 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?

, the amount of time that the primary current is turned on - CORRECT ANSWER - The dwell
section of a primary scope pattern represents:



decrease plug life - CORRECT ANSWER - Too high of a heat range spark plug will:



Both A and B - CORRECT ANSWER - 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?



none of the above - CORRECT ANSWER - in the diagram of the V-6 engine, which color
represents cylinder #4?



Both Technicians - 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?



6 - CORRECT ANSWER - A 6 cylinder engine with a coil on plug ignition system has how many
coils?



1 - CORRECT ANSWER - A 6 cylinder engine with a distributor ignition system has how many
coils?



3 - CORRECT ANSWER - A 6 cylinder engine with a waste spark system has how many coils?



The coil secondary is open. - CORRECT ANSWER - A coil is being checked, with the following
results. What does the reading mean? OL



Start off flat then slope upward - CORRECT ANSWER - A coil is being tested using current
ramping. The waveform should ________.



Waste-spark - CORRECT ANSWER - A compression-sensing ignition system uses a ________
type ignition.