Question 1

All the following statements concerning variable nozzle turbine (VNT)  type turbochargers are true EXCEPT:

Accepted Answer

A)   They produce more boost at lower engine speeds
B)   They decrease fuel consumption by 20 percent
C)   They do not require a wastegate
D)   They increase the effects of turbo lag

Question 2

Technician A says the action of the wastegate is controlled directly by manifold pressure. Technician B says the wastegate is controlled by the PCM. Who is correct?

Accepted Answer

A)   A only
B)   B only
C)   both A and B
D)   neither A nor B

Question 3

Technician A says an intake manifold that delivers both air and fuel [carburetor or TBI] is designed to cause turbulence so that the air and fuel mix while they are being delivered to the cylinders. Technician B says in an air only type manifold [PFI] the length of the runners is designed to achieve the best performance during a particular range of engine speeds. Who is correct?

Accepted Answer

A)   A only
B)   B only
C)   both A and B
D)   neither A nor B

Question 4

Lack of lubrication and oil lag are major causes of turbocharger failure.

Accepted Answer

A) True 
 B)False

Question 5

What manages turbo output by controlling the amount of exhaust gas entering the turbine housing?

Accepted Answer

A)   waste gate
B)   turbine seal assembly
C)   hot wheel
D)   cold wheel

Question 6

Technician A says the emission vacuum schematic for the vehicle can only be found in the factory service manual. Technician B say an emissions vacuum schematic is given on an under-hood decal. Who is correct?

Accepted Answer

A)   A only
B)   B only
C)   both A and B
D)   neither A nor B

Question 7

Before replacing an exhaust system component, Technician A soaks all old connections with a penetrating oil. Technician B checks the old system's routing for critical clearance points. Who is correct?

Accepted Answer

A)   A only
B)   B only
C)   both A and B
D)   neither A nor B

Question 8

Describe the main purpose of a catalytic converter.

Accepted Answer

It reduces carbon monoxide (CO...

Question 9

Modern intake manifolds for engines with port fuel injection are typically made of die-cast aluminum or plastic.

Accepted Answer

A) True 
 B)False

Question 10

A miniconverter is used _____.

Accepted Answer

A)   on small vehicles where a normal converter will not fit properly
B)   on engines that use leaded fuels
C)   in conjunction with EGR systems to supply clean exhaust for the cylinders
D)   to reduce emissions during engine warmup

Question 11

When intake air is compressed, its temperature decreases significantly.

Accepted Answer

A) True 
 B)False

Question 12

Normal engine vacuum on a normally aspirated engine at idle is between ____________________ in. Hg and ____________________ in. Hg.

Accepted Answer

The answer of Normal engine vacuum on a normally aspirated...

Question 13

Wet intake manifolds have __________________ passages cast directly in them.

Accepted Answer

The answer of Wet intake manifolds have __________________ passages cast...

Question 14

Technician A says a vacuum leak results in less air entering the engine, which causes a richer air/fuel mixture. Technician B says a vacuum leak in the system can cause the engine to run poorly. Who is correct?

Accepted Answer

A)   A only
B)   B only
C)   both A and B
D)   neither A nor B

Question 15

A turbocharged engine is running with 10 psi (69 kPa)  of turbo boost. At what pressure is air being fed into the engine when the engine is operating at sea level?

Accepted Answer

A)   4.7 psi (32 kPa) 
B)   10 psi (69 kPa) 
C)   14.7 psi (101 kPa) 
D)   24.7 psi (170 kPa)

Question 16

Describe the construction of a muffler.

Accepted Answer

The muffler consists of a seri...

Question 17

What is turbo lag?

Accepted Answer

The lack of immediate throttle response ...

Question 18

An engine can be either supercharged or turbocharged, but not both.

Accepted Answer

A) True 
 B)False

Question 19

What are the component parts of a turbocharger?

Accepted Answer

Turbine, shaft, comp...

Question 20

The __________________ is a chart of the vacuum hose routings, vacuum source, and relative component locations for all emissions-related equipment.

Accepted Answer

The answer of The __________________ is a chart of the...

Exam 32: Intake and Exhaust Systems

A miniconverter is used _____.

Correct Answer
verified

The __________________ is a chart of the vacuum hose routings, vacuum source, and relative component locations for all emissions-related equipment.

Correct Answer
verified

When intake air is compressed, its temperature decreases significantly.

Correct Answer
verified

Normal engine vacuum on a normally aspirated engine at idle is between in. Hg and in. Hg.

Correct Answer
verified

A turbocharged engine is running with 10 psi (69 kPa) of turbo boost. At what pressure is air being fed into the engine when the engine is operating at sea level?

Correct Answer
verified

Technician A says the emission vacuum schematic for the vehicle can only be found in the factory service manual. Technician B say an emissions vacuum schematic is given on an under-hood decal. Who is correct?

Correct Answer
verified

Technician A says the action of the wastegate is controlled directly by manifold pressure. Technician B says the wastegate is controlled by the PCM. Who is correct?

Correct Answer
verified

What is turbo lag?

Correct Answer
verified
The lack of immediate throttle response ...
View Answer

Correct Answer
verified

What manages turbo output by controlling the amount of exhaust gas entering the turbine housing?

Correct Answer
verified

All the following statements concerning variable nozzle turbine (VNT) type turbochargers are true EXCEPT:

Correct Answer
verified

Describe the construction of a muffler.

Correct Answer
verified
The muffler consists of a seri...
View Answer

Modern intake manifolds for engines with port fuel injection are typically made of die-cast aluminum or plastic.

Correct Answer
verified

Wet intake manifolds have __________________ passages cast directly in them.

Correct Answer
verified

Technician A says a vacuum leak results in less air entering the engine, which causes a richer air/fuel mixture. Technician B says a vacuum leak in the system can cause the engine to run poorly. Who is correct?

Correct Answer
verified

What are the component parts of a turbocharger?

Correct Answer
verified
Turbine, shaft, comp...
View Answer

Describe the main purpose of a catalytic converter.

Correct Answer
verified
It reduces carbon monoxide (CO...
View Answer

Before replacing an exhaust system component, Technician A soaks all old connections with a penetrating oil. Technician B checks the old system's routing for critical clearance points. Who is correct?

Correct Answer
verified

Lack of lubrication and oil lag are major causes of turbocharger failure.

Correct Answer
verified

An engine can be either supercharged or turbocharged, but not both.

Correct Answer
verified

Exam 32: Intake and Exhaust Systems

A miniconverter is used _____.

Correct AnswerverifiedShow Answer

The __________________ is a chart of the vacuum hose routings, vacuum source, and relative component locations for all emissions-related equipment.

Correct AnswerverifiedShow Answer

When intake air is compressed, its temperature decreases significantly.

Correct AnswerverifiedShow Answer

Normal engine vacuum on a normally aspirated engine at idle is between ____________________ in. Hg and ____________________ in. Hg.

Correct AnswerverifiedShow Answer

A turbocharged engine is running with 10 psi (69 kPa) of turbo boost. At what pressure is air being fed into the engine when the engine is operating at sea level?

Correct AnswerverifiedShow Answer

Technician A says the emission vacuum schematic for the vehicle can only be found in the factory service manual. Technician B say an emissions vacuum schematic is given on an under-hood decal. Who is correct?

Correct AnswerverifiedShow Answer

Technician A says the action of the wastegate is controlled directly by manifold pressure. Technician B says the wastegate is controlled by the PCM. Who is correct?

Correct AnswerverifiedShow Answer

What is turbo lag?

Correct AnswerverifiedThe lack of immediate throttle response ...View AnswerShow Answer

Correct AnswerverifiedShow Answer

What manages turbo output by controlling the amount of exhaust gas entering the turbine housing?

Correct AnswerverifiedShow Answer

All the following statements concerning variable nozzle turbine (VNT) type turbochargers are true EXCEPT:

Correct AnswerverifiedShow Answer

Describe the construction of a muffler.

Correct AnswerverifiedThe muffler consists of a seri...View AnswerShow Answer

Modern intake manifolds for engines with port fuel injection are typically made of die-cast aluminum or plastic.

Correct AnswerverifiedShow Answer

Wet intake manifolds have __________________ passages cast directly in them.

Correct AnswerverifiedShow Answer

Technician A says a vacuum leak results in less air entering the engine, which causes a richer air/fuel mixture. Technician B says a vacuum leak in the system can cause the engine to run poorly. Who is correct?

Correct AnswerverifiedShow Answer

What are the component parts of a turbocharger?

Correct AnswerverifiedTurbine, shaft, comp...View AnswerShow Answer

Describe the main purpose of a catalytic converter.

Correct AnswerverifiedIt reduces carbon monoxide (CO...View AnswerShow Answer

Before replacing an exhaust system component, Technician A soaks all old connections with a penetrating oil. Technician B checks the old system's routing for critical clearance points. Who is correct?

Correct AnswerverifiedShow Answer

Lack of lubrication and oil lag are major causes of turbocharger failure.

Correct AnswerverifiedShow Answer

An engine can be either supercharged or turbocharged, but not both.

Correct AnswerverifiedShow Answer

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Normal engine vacuum on a normally aspirated engine at idle is between in. Hg and in. Hg.

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified
The lack of immediate throttle response ...
View Answer

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified
The muffler consists of a seri...
View Answer

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified
Turbine, shaft, comp...
View Answer

Correct Answer
verified
It reduces carbon monoxide (CO...
View Answer

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified