1. A defect in the PCV system can
cause all of the following
EXCEPT
:
a. Increased oil consumption
b. Diluted or contaminated oil
c. Unstable engine operation at
idle and low speed
d. Overheating
2. The primary purpose of an EGR
system is to slow combustion and
lower peak temperatures in order
to reduce:
a. Hydrocarbons
b. Oxides of nitrogen
c. Carbon dioxide
d. Carbon monoxide
3. If the EGR valve leaks, expect All
of the following
EXCEPT
:
a. Rough idling
b. Stalling
c. Pinging and detonation
d. Hesitation
4. The downstream HO2S is used
PRIMARILY to:
a. Verify proper operation of the
catalytic converter
b. Prevent engine surging
c. Adjust the air-fuel ratio
d. Control NOx emissions
5. Air injection helps to oxidize any
unburnt fuel in the exhaust to
reduce:
a. Hydrocarbons
b. Oxides of nitrogen
c. Carbon dioxide
d. Carbon monoxide.
6. The LDP is designed to:
a. Transfer fuel from the tank to the
injectors
b. Stabilize engine speed under
load
c. Pressurize the EVAP system to
check for leaks
d. Control idle speed
7. On a vehicle without an EVAP leak
detection pump system, the
system test passes if:
a. Fuel vapors entering the system
exceeds a predetermined
value.
b. RPM drops by a predetermined
amount
c. Short term raises by a
predetermined amount
d. Idle air control opens by a
predetermined amount
8. A canister that does not purge
properly can cause all of the
following
EXCEPT
:
a. Incorrect air-fuel ratio
b. An increase in exhaust
emissions
c. Loss of fuel economy
d. Increased blowby
Chapter
D
: Review Questions
83
Summary of Contents for ASE-A8
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