Automotive Maintenance Quiz

Spark plugs are being replaced on a vehicle. Any of the following may be true EXCEPT:

• Twist the boot half a turn

• The spark plugs should be submerged in oil before installation

• The spark plugs should be installed without any torque specifications

• The spark plugs threads should be started using a ratchet

During an instruction panel gauge test, the technician observes that the engine temperature gauge is reading 200 F (93 C) on a cold engine. Technician A says that a scan tool can be used to compare the gauge reading to the coolant temperature sensor reading. Technician B says that an open coolant thermostat could be the cause. Who is right?

• A only

• B only

• Neither A nor B

• Both A and B

The diesel exhaust fluid (DEF) is being adjusted on a vehicle. Any fluid that remains in the bottle should be:

• Tighten the lug nuts in a star pattern

• Stored in the original container

• A restricted cabin filter

• Safely exit the building

When a shop fire cannot be immediately contained, the best thing to do is warn others in the area, and:

• Safely exit the building

• Twist the boot half a turn

• Water in the lubricant

• Excessive run out in the wheel

When measuring parallelism of a disc brake rotor, a technician measures 0.002" variation beyond specifications. The next step is to:

• Excessive run out in the wheel

• Determine rotor minimum "machine to" thickness

• Twist the bolt half a turn

• The engine may develop an oil leak

The ride (curb) height of a vehicle's front end is 2" below the manufacturer's specifications. Technician A says that this could cause tire wear problems. Technician B says that this could cause vehicle-handling problems. Who is right?

• A only

• Neither A nor B

• Both A and B

• B only

A vehicle has a squealing noise that changes with engine speed. This could be caused by:

• A radial ply tire pull

• A low refrigerant charge

• A failed compressor

• A loose accessory drive belt

A fully charged battery rated at 600 CCA, the ambient temperature is 70 degrees. Which of these current and time periods should be used?

• Twist the boot half a turn

• 300 amps for 15 seconds

• Water in the lubricant

• Fluid contaminated brake linings

A vehicle's halogen headlamp bulbs are being replaced. Technician A says the glass part of the bulb can only be handled with bare hands. Technician B says the headlamp may need to be removed. Who is right?

• Yellow

• Both A and B

• A only

• B only

Technician A says that excessive play of the inner tie rod indicates that the inner tie rod must be replaced. Technician B says that a torn bellows boot on the rack and pinion indicates that the outer tie rod end must be replaced. Who is right?

• Both A and B

• Neither A nor B

• B only

• A only