ASE G1 Practice Flashcard

Front

Which condition can cause an engine's operating temperature to rise excessively only at high speeds? Options: An inoperative electric cooling fan, A partially obstructed radiator, Low engine oil level, A faulty radiator cap

Back

A partially obstructed radiator

Front

Who is correct regarding the function of a knock sensor: Technician A says that a knock sensor is used to detect cylinder knocking and adjust ignition timing to prevent it. Technician B says that a knock sensor can adjust fuel pressure to prevent knocking?

Back

Technician A only

Front

When a turbocharged engine is producing less boost than expected, which of the following should be checked FIRST? Exhaust manifold pressure, The wastegate actuator and control system, Compression ratio of the engine, The intake manifold gasket for leaks

Back

The wastegate actuator and control system

Front

In a diesel engine system, what is the main function of glow plugs?

Back

To heat the combustion chamber to aid in cold starting

Front

A technician finds oil in the coolant of an engine. What is the MOST likely cause?

Back

A leaking head gasket

Front

A technician has determined that a vehicle's multiport fuel injection system is not delivering fuel to one of the cylinders. What should be checked FIRST to diagnose this problem?

Back

Injector pulse from the ECU

Front

When a vehicle with an overhead cam engine has a timing belt failure, which of the following is MOST likely to occur? The oil pump will cease to function. The alternator will stop charging. The exhaust system will become clogged.

Back

The engine will experience reduced compression.

Front

When an engine misfires, Technician A says it could be due to a faulty mass airflow sensor (MAF). Technician B says it could be because of a defective Variable Valve Timing (VVT) solenoid. Who is correct?

Back

Both Technician A and Technician B

Front

When checking for an intermittent stalling issue, which of the following is the LEAST likely to be checked first? Crankshaft position sensor signal, Throttle body condition, Fuel tank cap seal integrity, Idle Air Control IAC valve operation

Back

Fuel tank cap seal integrity

Front

What could be the cause of an automatic transmission exhibiting no forward movement but reverse operating normally? Options: Misaligned torque converter, Improperly seated forward clutch piston, Clogged transmission fluid cooler, Faulty reverse band

Back

Improperly seated forward clutch piston