ASE A1 Engine Repair Practice Test
36. An engine's aluminum thermostat housing has corroded prematurely and leaks coolant. Which of the following is MOST likely causing this condition?
- A. Engine overheating.
- B. Electrolysis.
- C. A leaking radiator hose.
- D. A faulty thermostat.
37. An engine is losing coolant. A radiator pressure tester is installed on the neck of the radiator while the engine is cold. After starting the engine, the pressure on the gauge quickly rises to 19 psi. Which of the following is causing this test result?
- A. Acidic engine coolant.
- B. The cylinder head gasket is leaking.
- C. There's an air pocket in the cooling system.
- D. This pressure is normal.
38. New crankshaft bearings are installed after the main bore of an engine block has been line bored. Which of the following is correct?
- A. Use oversized bearings.
- B. Align the oil hole in the bearing to the oil passage in the engine block.
- C. Worn main bearings result in high oil pressure.
- D. Both A and B.
39. The engine runs rough and stumbles after setting the hydraulic lifters to zero lash. Technician A says these lifters require a preload. Technician B says the adjusting nuts should be tightened further. Who is correct?
- A. Technician A
- B. Technician B
- C. Both A and B
- D. Neither A or B
40. After removing the valve springs from a cylinder head, they should be checked for:
- A. Squareness with a square and a feeler gauge.
- B. Valve spring installed height with a ruler.
- C. Both A and B.
- D. Neither A or B.