Engine Performance Ch. 9 - Ch. 12
Exam Questions & Answers (Grade
A+)
A hot-range spark plug has a shorter heat path than a cold-range
spark plug. -
correct answer ✅False
All of the following situations may call for timing advance except: -
correct answer ✅Heavy engine load
An oscilloscope test shows firing lines the same, but abnormally
high. This is the result of: -
correct answer ✅A lean air/fuel mixture.
At increased RPM and less time between coil firings, electronic
dwell begins earlier to allow for coil saturation. -
correct answer ✅True
Base or initial timing is timing with computer advance added. -
correct answer ✅False
Base timing is often adjustable on DI systems. -
correct answer ✅True
,Engine Performance Ch. 9 - Ch. 12
Exam Questions & Answers (Grade
A+)
Base timing is the initial timing specified by the: -
correct answer ✅manufacturer.
Carbon tracking is the formation of carbonized dust between
distributor cap terminals. -
correct answer ✅True
For maximum engine power to be obtained, maximum cylinder
pressure should occur: -
correct answer ✅10 - 20 after TDC
Ignition cables are usually made of solid wire which acts as a
resistor in the secondary circuit. -
correct answer ✅False
Ignition modules control: -
correct answer ✅The ground connection to the primary coil
winding.
, Engine Performance Ch. 9 - Ch. 12
Exam Questions & Answers (Grade
A+)
In addition to ignition control, a Hall-effect switch can also be used
to: -
correct answer ✅Both A and B
Spark plugs are being discussed: Technician A says iridium spark
plugs should not have the gap checked by the technician.
Technician B says platinum spark plugs should not have the
electrode filed. Who is correct? -
correct answer ✅Technician B
Technican A says the crankshaft position sensor can be a Hall effect
switch. Technician B says the crankshaft position sensor can be a
magnetic pulse generator. Who is correct? -
correct answer ✅Both A and B
Technician A says as engine speed slows, the timing should be
retarded or have less advance. Technician B says typically, the more
load on an engine, the less spark advance is needed. Who is
correct? -
correct answer ✅Both A and B
Exam Questions & Answers (Grade
A+)
A hot-range spark plug has a shorter heat path than a cold-range
spark plug. -
correct answer ✅False
All of the following situations may call for timing advance except: -
correct answer ✅Heavy engine load
An oscilloscope test shows firing lines the same, but abnormally
high. This is the result of: -
correct answer ✅A lean air/fuel mixture.
At increased RPM and less time between coil firings, electronic
dwell begins earlier to allow for coil saturation. -
correct answer ✅True
Base or initial timing is timing with computer advance added. -
correct answer ✅False
Base timing is often adjustable on DI systems. -
correct answer ✅True
,Engine Performance Ch. 9 - Ch. 12
Exam Questions & Answers (Grade
A+)
Base timing is the initial timing specified by the: -
correct answer ✅manufacturer.
Carbon tracking is the formation of carbonized dust between
distributor cap terminals. -
correct answer ✅True
For maximum engine power to be obtained, maximum cylinder
pressure should occur: -
correct answer ✅10 - 20 after TDC
Ignition cables are usually made of solid wire which acts as a
resistor in the secondary circuit. -
correct answer ✅False
Ignition modules control: -
correct answer ✅The ground connection to the primary coil
winding.
, Engine Performance Ch. 9 - Ch. 12
Exam Questions & Answers (Grade
A+)
In addition to ignition control, a Hall-effect switch can also be used
to: -
correct answer ✅Both A and B
Spark plugs are being discussed: Technician A says iridium spark
plugs should not have the gap checked by the technician.
Technician B says platinum spark plugs should not have the
electrode filed. Who is correct? -
correct answer ✅Technician B
Technican A says the crankshaft position sensor can be a Hall effect
switch. Technician B says the crankshaft position sensor can be a
magnetic pulse generator. Who is correct? -
correct answer ✅Both A and B
Technician A says as engine speed slows, the timing should be
retarded or have less advance. Technician B says typically, the more
load on an engine, the less spark advance is needed. Who is
correct? -
correct answer ✅Both A and B
