Complete ASE Practice Test 3 (Lubrication and Cooling Systems Diagnosis and Repair) "Engine Block Diagnosis and Repair" (page 68 to 75) from ASE A1 Practice Study Guide with Complete Solutions

Complete ASE Practice Test 3 (Lubrication and Cooling Systems Diagnosis and Repair) "Engine Block Diagnosis and Repair" (page 68 to 75) from ASE A1 Practice Study Guide with Complete Solutions Technician A says that before installing an oil pump, it should be primed with clean engine oil. Technician B says that before installing an oil pump, the position of the pickup screen should be checked to make sure it fits closely to the bottom of the oil pan. Who is right? - Answer️️ -The correct answer is C, both technicians are right. ~The oil pump should be filled with oil during engine reassembly to prevent it from cavitating or sucking air during engine start-up. To prevent the pickup from sucking air and subsequent oil starvation and engine damage, make sure the pickup screen is positioned close to the bottom of the oil pan to ensure it is always submerged in oil. All of the following can cause low oil pressure EXCEPT: A. diluted engine oil B. worn pistons C. excessive bearing clearance D. clogged oil pump pickup - Answer️️ -The correct answer is B. ©SOPHIABENNET@2024/2025 Wednesday, August 21, 2024 12:13 PM 2 ~Worn pistons can cause noise and accelerate ring and bore wear, but would not cause low oil pressure. Diluted oil, excessive bearing clearance and a clogged pump pickup can all cause low oil pressure. Technician A says that the thermostat controls maximum engine temperature. Technician B says if the engine continously runs hot, install a cooler thermostat. Who is right? - Answer️️ -The correct answer is D, neither technician is right. ~The thermostat's function is to allow the engine to come to operating temperature quickly and them maintain a minimum operating temperature. The PCM bases fuel mixture, ignition timing, EGR operation and other functions in part on input regarding coolant temperature. Only the correct heat range thermostat should be installed. If the thermostat is good and the engine runs hot, another problem exists. All of the following could cause an engine to overheat EXCEPT: A. defective fan clutch B. clogged cooling system C. broken fan shroud D. stuck open thermostat - Answer️️ -The correct answer is D. ©SOPHIABENNET@2024/2025 Wednesday, August 21, 2024 12:13 PM 3 ~A thermostat that is stuck open will not restrict coolant flow. A clogged cooling system would restrict coolant flow and cause engine overheating. A defective fan clutch and broken fan shroud would both reduce air flow through the radiator and could cause engine overheating. Technician A says that when replacing a thermostat, the heat sensing element should face the block. Technicia