ASE A1 Engine Repair Practice Test
56. A vehicle is overheating, but returns to normal at idle. Both of the engine’s electric cooling fans are functioning correctly. Technician A says this could be caused by an internal restriction in the radiator. Technician B says an infrared thermometer is used to diagnose this problem. Who is correct?
- A. Technician A
- B. Technician B
- C. Both A and B
- D. Neither A or B
57. A metallic knocking sound is heard behind an engine's harmonic balancer. An oil pressure test indicates oil pressure is below specifications. Technician A says the engine's main bearing inserts should be inspected for wear. Technician B says a worn thin crankshaft thrust bearing will cause this condition. Who is correct?
- A. Technician A
- B. Technician B
- C. Both A and B
- D. Neither A or B
58. A vehicle vibrates only when placed in reverse. The MOST likely cause of this condition is:
- A. Crossed ignition wires.
- B. A faulty fuel injector.
- C. A faulty balance shaft.
- D. A broken engine mount.
59. Two technicians are discussing a turbocharged engine. Technician A says the wastegate is a component used to control boost pressure. Technician B says when opened, the wastegate diverts exhaust gas from the turbine wheel. Who is correct?
- A. Technician A
- B. Technician B
- C. Both A and B
- D. Neither A or B
60. Technician A says that torque to yield bolts can always be reused. Technician B says that torque to yield bolts can be reused as long as they are cleaned and oiled before they are reinstalled and torqued. Who is correct?
- A. Technician A
- B. Technician B
- C. Both A and B
- D. Neither A or B
