Engine Performance State Practice
Test Exam Questions & Answers
(Grade A+)
On an OBD II system, a loose gas cap will cause?
The malfunction indicator lamp (MIL) to turn on
poor fuel mileage
a hard start condition
engine hesitation -
correct answer ✅The malfunction indicator lamp (MIL) to turn on
You have verified a slow cranking complaint. Which of the following
should you do next?
determine if the solenoid is making contact when the ignition key is
turned to the start position
determine the condition of the battery
check the voltage drop in the starter circuit
perform a starter draw test -
correct answer ✅determine the condition of the battery
The scope pattern below was obtained on the 30KV scale. What is
the available voltage?
,Engine Performance State Practice
Test Exam Questions & Answers
(Grade A+)
7 kv
13 kv
4 kv
29 kv -
correct answer ✅29 kv
If the ignition timing will not advance past base timing the problem
may be:
crank sensor broken
fuel trim out of range
cam timing incorrect
vehicle in limp mode -
correct answer ✅vehicle in limp mode
A weak ignition coil would most likely appear in which section of
the scope pattern?
, Engine Performance State Practice
Test Exam Questions & Answers
(Grade A+)
A
B
C
None of the above -
correct answer ✅B
The powertrain Control Module (PCM) uses the Throttle position
Sensor (TPS) signal information to adjust all of the following except:
Air/fuel ratio
Ignition timing
Fuel pressure
EGR flow -
correct answer ✅Fuel pressure
Which of the following could result in an infrared analyzer giving a
higher than actual HC reading?
failing to purge the sample hose before testing
Test Exam Questions & Answers
(Grade A+)
On an OBD II system, a loose gas cap will cause?
The malfunction indicator lamp (MIL) to turn on
poor fuel mileage
a hard start condition
engine hesitation -
correct answer ✅The malfunction indicator lamp (MIL) to turn on
You have verified a slow cranking complaint. Which of the following
should you do next?
determine if the solenoid is making contact when the ignition key is
turned to the start position
determine the condition of the battery
check the voltage drop in the starter circuit
perform a starter draw test -
correct answer ✅determine the condition of the battery
The scope pattern below was obtained on the 30KV scale. What is
the available voltage?
,Engine Performance State Practice
Test Exam Questions & Answers
(Grade A+)
7 kv
13 kv
4 kv
29 kv -
correct answer ✅29 kv
If the ignition timing will not advance past base timing the problem
may be:
crank sensor broken
fuel trim out of range
cam timing incorrect
vehicle in limp mode -
correct answer ✅vehicle in limp mode
A weak ignition coil would most likely appear in which section of
the scope pattern?
, Engine Performance State Practice
Test Exam Questions & Answers
(Grade A+)
A
B
C
None of the above -
correct answer ✅B
The powertrain Control Module (PCM) uses the Throttle position
Sensor (TPS) signal information to adjust all of the following except:
Air/fuel ratio
Ignition timing
Fuel pressure
EGR flow -
correct answer ✅Fuel pressure
Which of the following could result in an infrared analyzer giving a
higher than actual HC reading?
failing to purge the sample hose before testing
