ASE G1 Maintenance and Lt. Repair Practice Test

1. An engine's exhaust is white gray colored. Which of the following is causing this condition?

  • A. Oil burning in the combustion chamber.
  • B. Excessive fuel burning in the combustion chamber.
  • C. A rich fuel mixture.
  • D. Coolant burning in the combustion chamber.

1.

Answer A is wrong. Blue gray exhaust is an indication of oil burning in the combustion chamber.

Answer B is wrong. Black exhaust is an indication of a rich fuel condition.

Answer C is wrong. Coolant burning in the combustion chamber will result in white exhaust.

Answer D is correct. White exhaust is an indication that coolant is entering and burning in the combustion chamber. This is often caused by overheating the engine, resulting in a warped cylinder head and faulty head gasket.

2. An automatic transmission's fluid is pink and milky. Technician A says this is caused by engine overheating. Technician B says the transmission could have been overfilled and the fluid has become aerated. Who is correct?

  • A. Technician A
  • B. Technician B
  • C. Both A and B
  • D. Neither A or B

2.

Answer A is wrong. Transmission coolers are found in the radiator and cooled by the engine's cooling system. Engine overheating can result in black or dark brown colored transmission fluid.

Answer B is wrong. Overfilling the transmission alters transmission system pressures, causes aeration, and can result in fluid escaping from the vent.

Answer C is wrong. Neither technician is correct. Transmission fluid turns pink and milky when it's mixed with coolant in the radiator. The radiator contains an internal transmission cooler that cools the transmission fluid with coolant after it has been cooled by the radiator.

Answer D is correct. Neither technician is correct, the ATF is contaminated with coolant.

3. A front wheel drive vehicle makes a clacking noise that only occurs while cornering. The technician suspects a faulty front axle. Which of these is MOST likely the cause?

  • A. The inner CV joint.
  • B. The outer CV joint.
  • C. The vibration damper.
  • D. The half shaft is bent.

3.

Answer A is wrong. A faulty inner CV joint makes most noise during initial acceleration.

Answer B is correct. A faulty or worn outer CV joint makes its most noise while cornering.

Answer C is wrong. The damper prevents high speed vibration.

Answer D is wrong. A bent axle will cause a vibration that increases with vehicle speed. The outer CV joint is notorious for making clacking and popping noises while turning.

4. The tread of a tire is worn in the center and not on the outer shoulders. Technician A says this is caused by an improper wheel alignment angle. Technician B says this is caused by over inflating the tire. Who is correct?

  • A. Technician A
  • B. Technician B
  • C. Both A and B
  • D. Neither A or B

4.

Answer A is wrong. This is caused by an overinflated tire.

Answer B is correct. An overinflated tire wears the center of the tire's tread and an underinflated tire wears the outside edges or "shoulders" of the tire.

Answer C is wrong. Technician B is correct.

Answer D is wrong. Technician B is correct.

5. A vehicle with power assist brakes has a hard brake pedal with little stopping power. Which of these is the MOST likely cause of this condition?

  • A. The brake booster.
  • B. The master cylinder.
  • C. Air in the system.
  • D. Contaminated brake fluid.

5.

Answer A is correct. A faulty brake booster will result in a hard brake pedal.

Answer B is wrong. A faulty master cylinder typically results in a spongy pedal that drifts to the floor after application.

Answer C is wrong. Air in the system results in a spongy brake pedal.

Answer D is wrong. Contaminated brake fluid damages rubber seals and results in a soft spongy brake pedal.