ASE A1 Engine Repair Practice Test
51. A wet compression test is performed on a four-cylinder engine. The number two cylinder's compression is below specifications and remains unchanged after injecting oil. This result indicates:
- A. Worn piston rings.
- B. A faulty valve.
- C. A hole in the piston.
- D. Excessive carbon buildup on the piston's dome.
52. A vehicle has blue-colored exhaust emitting from its tailpipe. Technician A says this may be caused by worn piston rings. Technician B says this may be caused by a leaking fuel injector. Who is correct?
- A. Technician A
- B. Technician B
- C. Both A and B
- D. Neither A or B
53. Technician A says to remove the ridge on the engine block before removing the pistons. Technician B says a block's ridge will damage the new piston rings during installation. Who is correct?
- A. Technician A
- B. Technician B
- C. Both A and B
- D. Neither A or B
54. A vehicle emits blue-gray exhaust from its tailpipe when it starts in the morning. The blue-gray-colored exhaust goes away after the engine has run for a few minutes. The MOST likely cause of this condition is a:
- A. Worn piston ring.
- B. Lean fuel condition.
- C. Leaking fuel injector.
- D. Leaking valve seals.
55. An engine has a collapsed upper radiator hose. Technician A says this is caused by a faulty radiator cap. Technician B says this is caused by insufficient coolant level. Who is correct?
- A. Technician A
- B. Technician B
- C. Both A and B
- D. Neither A or B
