ASE A1 Engine Repair Practice Test
66. An engine is leaking oil past several oil seals. Technician A says a stuck closed PCV valve would cause this problem. Technician B says a clogged crankcase breather tube would result in this condition. Who is correct?
- A. Technician A
- B. Technician B
- C. Both A and B
- D. Neither A or B
67. Technician A says that a rich air-fuel ratio can result in excessive carbon buildup on the engine's valves and pistons. Technician B says coolant entering the combustion chamber results in excessive carbon buildup in the cylinder and piston crowns. Who is correct?
- A. Technician A
- B. Technician B
- C. Both A and B
- D. Neither A or B
68. Technician A says a blown head gasket results in coolant entering the combustion chamber. Technician B says a blown head gasket could result in contaminated milky brown engine oil. Who is correct?
- A. Technician A
- B. Technician B
- C. Both A and B
- D. Neither A or B
69. Technician A says to use a feeler gauge to measure the top compression piston ring end gap. Technician B says if the piston ring end gap is too small, the ends may touch, resulting in scuffing and binding. Who is correct?
- A. Technician A
- B. Technician B
- C. Both A and B
- D. Neither A or B
70. Technician A says when replacing a cylinder head to reuse the torque to yield bolts as long as they are cleaned and oiled before they are reinstalled and torqued. Technician B says after removal, a torque to yield bolt always returns to its original length. Who is correct?
- A. Technician A
- B. Technician B
- C. Both A and B
- D. Neither A or B