Exam 42: Intake and Exhaust Systems, Turbochargers and Superchargers

The part that MOST-Likely resembles a muffler, but contains catalysts to reduce engine emissions before the exhaust stream exits the exhaust pipe is:

What is the purpose of the exhaust system?

While having a discussion, Technician A says that a normally aspirated engine will lose 3% of its horsepower with every 1,000-foot increase in altitude. Technician B says that a turbocharged vehicle will not lose power when driven from low to higher altitude. Who is correct?

Better high-rpm performance means better low-rpm performance.

What precautions should you take when working with exhaust system parts?

In a ____, each barrel is independent of the other, although they share the same float bowl.

Which of the following statements is LEAST-Likely true?

Most carburetor/TBI intake manifolds also have coolant crossover passages that connect the heads on the left and right cylinder banks.

All of the following statements are true EXCEPT:

A(n) ____________________ is a second muffler, in line with the primary muffler. It further reduces the noise level.

Two kinds of manifolds are used in an engine's breathing system: intake manifolds and exhaust manifolds.

There is no intake manifold heating on port-injected engines. Most are made of space age plastic materials or cast aluminum.

A(n) ____ is an air pump designed to increase air density in the cylinder.

Intake manifold passages are called ____________________.

The term MOST-Likely used to describe the amount of air density a turbo can provide is:

The air space below a throttle body or carburetor is known as the ____________________.

Why should you disable the ignition system and crank the engine for 30 seconds when oil is changed?

While having a discussion, Technician A says that a backfire is an explosion that occurs in the intake system. Technician B says that a popback is an explosion that occurs in the exhaust system. Who is correct?

Briefly discuss each of the three styles of exhaust pipes.

All of the following statements are true EXCEPT: