Lesson 3
PRACTICE EXERCISE
1. Immediate repair of exhaust systems is important to prevent
a. engine overheating.
b. exhaust back pressure.
c. injury to personnel.
2. A small hole is drilled in the bottom of some mufflers to allow
a. excess pressure to escape.
b. condensed water to drain.
c. cooling air to enter.
3. A turbocharger is usually connected to the
a. exhaust manifold.
b. muffler.
c. connecting pipe.
4. A muffler that is rusted away on the inside can best be detected by
a. testing for restrictions.
b. listening for rattles.
c. examining the muffler.
5. A dual exhaust system decreases
a. cost of the system.
b. exhaust back pressure.
c. manifold temperature.
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