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| A-8 Engine Performance Practice Test Answers |
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11.
Answer A is wrong. The PCM will retard the timing when it receives a signal from the knock sensor.
Answer B is correct. The sensor creates and sends an A/C voltage signal to the PCM.
Answer C is wrong. Technician B is correct.
Answer D is wrong. Technician B is correct.
Return
Answer A is wrong. The PCM will retard the timing when it receives a signal from the knock sensor.
Answer B is correct. The sensor creates and sends an A/C voltage signal to the PCM.
Answer C is wrong. Technician B is correct.
Answer D is wrong. Technician B is correct.
Return
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12.
Answer A is wrong. The wastegate is a valve that releases excess pressure back to the exhaust stream.
Answer B is wrong. Some PCMs use engine speed.
Answer C is correct. Both technicians are correct.
Answer D is wrong. Both technicians are correct.
Return
Answer A is wrong. The wastegate is a valve that releases excess pressure back to the exhaust stream.
Answer B is wrong. Some PCMs use engine speed.
Answer C is correct. Both technicians are correct.
Answer D is wrong. Both technicians are correct.
Return
13.
Answer A is wrong. This actuator would not likely cause this condition.
Answer B is wrong. This sensor would not likely cause this condition.
Answer C is wrong. This valve would not likely cause this condition.
Answer D is correct. A faulty TP sensor would cause this condition.
Return Learn more about Throttle Position Sensors.
Answer A is wrong. This actuator would not likely cause this condition.
Answer B is wrong. This sensor would not likely cause this condition.
Answer C is wrong. This valve would not likely cause this condition.
Answer D is correct. A faulty TP sensor would cause this condition.
Return Learn more about Throttle Position Sensors.
14.
Answer A is correct. A five gas analyzer checks HC, CO, CO2, O2, and NOx.
Answer B is wrong. A four gas analyzer checks only HC, CO, CO2, AND O2. NOx is considered the fifth gas.
Answer C is wrong. Technician A is correct.
Answer D is wrong. Technician A is correct.
Return
Answer A is correct. A five gas analyzer checks HC, CO, CO2, O2, and NOx.
Answer B is wrong. A four gas analyzer checks only HC, CO, CO2, AND O2. NOx is considered the fifth gas.
Answer C is wrong. Technician A is correct.
Answer D is wrong. Technician A is correct.
Return
15.
Answer A is wrong. Burning coolant emits white smoke from the tailpipe.
Answer B is correct. Burning oil emits blue gray smoke from the tailpipe.
Answer C is wrong. Technician B is correct.
Answer D is wrong. Technician B is correct.
Return Learn more about Exhaust Color Diagnosis.
Answer A is wrong. Burning coolant emits white smoke from the tailpipe.
Answer B is correct. Burning oil emits blue gray smoke from the tailpipe.
Answer C is wrong. Technician B is correct.
Answer D is wrong. Technician B is correct.
Return Learn more about Exhaust Color Diagnosis.
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