| ASE A-8 Engine Performance Certification Practice Answers |
|---|
|
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. |
|
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. |
|
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. |
|
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. |
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. |