ASE A1 Engine Repair Practice Test
46. An engine gradually overheats at cruising speeds but returns to normal at idle. Both of the engine's electric cooling fans are functioning correctly. Which of the following is MOST likely causing this condition?
- A. A restriction in the radiator.
- B. A stuck closed fan relay.
- C. A faulty radiator cap.
- D. A leak in the cooling system.
47. A technician is checking for piston ring groove clearance. The proper technique includes:
- A. The old ring and a feeler gauge.
- B. The new ring and a feeler gauge.
- C. Only a feeler gauge.
- D. No feeler gauge is required.
48. A cylinder power balance test on an engine with sequential fuel injection indicates that the #5 cylinder is underperforming. Technician A says this could be the result of a clogged fuel injector. Technician B says this could be caused by leaking secondary insulation. Who is correct?
- A. Technician A
- B. Technician B
- C. Both A and B
- D. Neither A or B
49. A turbocharger wastegate is sticking. Technician A says a stuck open wastegate will result in overboost. Technician B says a stuck closed wastegate will result in an underboost condition. Who is correct?
- A. Technician A
- B. Technician B
- C. Both A and B
- D. Neither A or B
50. Technician A says that insufficient hydraulic lifter preload results in excessive valve train noise. Technician B says excessive hydraulic lifter preload results in a high intake manifold vacuum. Who is correct?
- A. Technician A
- B. Technician B
- C. Both A and B
- D. Neither A or B
