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Engine Tune Up Exam Study Guide with Complete Solutions
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Engine Tune Up Exam Study Guide with Complete Solutions
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©PREP4EXAMS@2024[REAL EXAM DUMPS] Thursday, July 25, 2024 6:51 PMEngine Tune Up Exam Study Guide with Complete Solutions
The engine vacuum is low but steady - ✔️✔️Retarded Timing
The Purpose of catalytic converter - ✔️✔️oxidize hc co into c02 and h20
What vehicles are designed to go into a closed loop operation when - ✔️✔️all of the
above
Diagram shows a vacuum hose connected to "p vacuum" this means the hose should
be connected - ✔️✔️above the throttle plate
If the voltage spike is not high enough on one cylinder, what is the most likely
source of the problem. - ✔️✔️a failed spark plug
wide-open-throttle the power train control module reverts - ✔️✔️open loop, rich
mixtures
during a cylinder leakage test air escaping through the throttle body means there is
a leak at - ✔️✔️the intake valve
higher than normal oxides of nitrogen (n0x) emissions may be caused by - ✔️✔️all of
the above
A reading of 8 volts on meter 2 while cranking would indicate - ✔️✔️an excessive
ground circuit voltage drop
emission control systems are installed on engines to reduce what 3 specific exhaust
products - ✔️✔️Hydrocarbons, carbon monoxide and oxides of nitrogen
You have verified a slow cranking complaint, which of the following should you do
next - ✔️✔️Determine the condition of the battery
The Egr System is designed to - ✔️✔️cruise
1
, ©PREP4EXAMS@2024[REAL EXAM DUMPS] Thursday, July 25, 2024 6:51 PM
You are monitoring the tps signed voltage digital volt ohm - ✔️✔️A smooth voltage
increase to about 4.5 v
an electronic fuel injected system that sprays into the throat of intake - ✔️✔️a
throttle body injections system
What is the function of the egr valve - ✔️✔️it recalculates exhaust gasses into the
intake
A customer brings vehicle to you with a concern of low power - ✔️✔️all of the above
A reading of 1v on meter number 1 cranking - ✔️✔️Do acceptable voltage drop
You are checking the 02 during closed loop 450 to 500 - ✔️✔️the sensor is sluggish
and probably bad
A car with dis will not start - ✔️✔️A defective or misalignment crank sensor
How is fuel pressure controlled in a electric efl - ✔️✔️Engine vacuum
A vehicle with OBD 2 is being check for poor performance and low power with check
engine light flashing - ✔️✔️detecting a misfire condition
A weak ignition coil would most likely - ✔️✔️B
A car will not start because of spark - ✔️✔️Check for primary circuit at coil
You suspect that the timing chain or belt is jumped or broken - ✔️✔️all of the above
If the ignition timing will not advance past base timing - ✔️✔️vehicle in limp mode
When spark Knock occurs - ✔️✔️The knock sensor signals microcomputer retard
When the microcomputer monitor air flow - ✔️✔️the proper amount of fuel can be
supplied
The power train control module used the TPS - ✔️✔️fuel pressure
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