Engine Performance Chapter 2 Exam
Questions & Answers (Grade A+)
Technician A says low compression pressures could prevent
combustion from occurring inside a cylinder. Technician B says
compression pressure is not a factor for complete combustion. Who
is correct? -
correct answer ✅Technician A
Technician A says: The purpose of an engine tune-up is to increase
the power and efficiency of the engine. Technician B says: The
purpose of an engine tune-up is to restore or maintain the original
performance and economy of the engine. Who is correct? -
correct answer ✅Technician B
While discussing spark plug replacement intervals, Technician A
says vehicles in the 60s required spark plug replacement every
100,000 miles. Technician B says late-model engines require a tune-
up every 30,000 miles. Who is correct? -
correct answer ✅Neither A nor B
A cooling system pressure tester may be used to -
correct answer ✅Test for combustion leaks, Test the cooling
system for leaks, Test the radiator cap
, Engine Performance Chapter 2 Exam
Questions & Answers (Grade A+)
Technician A says an upward movement of the voltage trace on an
oscilloscope screen indicates an increase in time. Technician B says
an upward movement of the voltage trace on an oscilloscope
screen indicates an increase in voltage. Who is correct? -
correct answer ✅Technician B
The best place to find the emission and tune-up data about a
specific vehicle is -
correct answer ✅The under hood decal
While testing amperage using an inductive pickup -
correct answer ✅Clamp the inductive pickup around the wire
being tested
Technician A says an injector balance tester may be used to test the
injectors in a port fuel injected engine for proper operation.
Technician B says an injector balance tester may be used to analyze
the signals to the injectors on a port fuel injected engine from the
computer. Who is correct? -
correct answer ✅Technician A
Questions & Answers (Grade A+)
Technician A says low compression pressures could prevent
combustion from occurring inside a cylinder. Technician B says
compression pressure is not a factor for complete combustion. Who
is correct? -
correct answer ✅Technician A
Technician A says: The purpose of an engine tune-up is to increase
the power and efficiency of the engine. Technician B says: The
purpose of an engine tune-up is to restore or maintain the original
performance and economy of the engine. Who is correct? -
correct answer ✅Technician B
While discussing spark plug replacement intervals, Technician A
says vehicles in the 60s required spark plug replacement every
100,000 miles. Technician B says late-model engines require a tune-
up every 30,000 miles. Who is correct? -
correct answer ✅Neither A nor B
A cooling system pressure tester may be used to -
correct answer ✅Test for combustion leaks, Test the cooling
system for leaks, Test the radiator cap
, Engine Performance Chapter 2 Exam
Questions & Answers (Grade A+)
Technician A says an upward movement of the voltage trace on an
oscilloscope screen indicates an increase in time. Technician B says
an upward movement of the voltage trace on an oscilloscope
screen indicates an increase in voltage. Who is correct? -
correct answer ✅Technician B
The best place to find the emission and tune-up data about a
specific vehicle is -
correct answer ✅The under hood decal
While testing amperage using an inductive pickup -
correct answer ✅Clamp the inductive pickup around the wire
being tested
Technician A says an injector balance tester may be used to test the
injectors in a port fuel injected engine for proper operation.
Technician B says an injector balance tester may be used to analyze
the signals to the injectors on a port fuel injected engine from the
computer. Who is correct? -
correct answer ✅Technician A
