AUT-102 WK7 nights

Front

During a car maintenance workshop, Malik noticed different colors of smoke coming from the exhaust of a vehicle. Which color indicates an internal mechanical problem in the engine?

Back

All of the above

Front

In Thomas's car engine, if one valve is larger, it will be the ________ valve?

Back

Intake

Front

What is the correct order of operations for a 4-stroke engine?

Back

Intake, Compression, Power, Exhaust

Front

During a routine check-up of Byron's car, Ricard noticed that the spark plug's electrode was covered with thick black carbon deposits. Which of the following is correct? the engine has a vacuum leak, this is normal wear, the piston rings are worn, the fuel injector is leaking

Back

the piston rings are worn

Front

During a routine check, Jaheem notices that the oil pressure switch on his car's engine might be malfunctioning. All of the following statements about oil pressure switches are true EXCEPT: test switch with a DMM, the warning lamp turns off as oil pressure rises, the sensor is a variable resistor, set the meter to ohms to measure continuity

Back

the sensor is a variable resistor

Front

During a routine check-up of a car in an automotive class, Gabe notices a hissing sound coming from the throttle body while performing a cylinder leakage test. This sound indicates:

Back

bad intake valve

Front

Darius and Byron are discussing how to prepare an engine for new pistons. Darius says to use a cylinder bore gauge to measure the cylinder's bore for excessive taper. Byron says to measure the cylinder's bore for an out of round condition before installing new pistons. Who is correct?

Back

Both

Front

When Courtney and Samuel are working on replacing connecting rod bearings in an engine, what should they do? Options: replace the crankshaft if the connecting rod bearings are worn, scratch the cylinder number on each connecting rod, use oversized bearings, do not mix up the connecting rod cap locations

Back

do not mix up the connecting rod cap locations

Front

In a practical automotive workshop, Corey is learning about engine maintenance. He discovers that overhead cam engines' timing chains may use ______tensioners. What type of tensioners might be used here?

Back

All of the above

Front

Imagine Corey's car emits blue smoke for a few seconds when starting cold; the MOST likely cause is

Back

Worn valve seals