WorksheetsChapter 27
Total questions: 20
Worksheet time: 10mins
A thermostat can fail in which way?
Stuck open
Stuck partially open
Stuck closed
Any of the above
Coolant drained from the cooling system when replacing a thermostat or water pump should be ______.
disposed of properly or recycled
poured down a toilet
filtered and reinstalled after the repair
reused
A water pump can fail to provide the proper amount of coolant flow through the cooling system if what has happened?
The impeller blades are worn or slipping on the shaft
The coolant is leaking from the weep hole
The bearing is noisy
A bearing failure has caused the shaft to become loose
A defective thermostat can cause the powertrain control module (PCM) to set what diagnostic trouble code (DTC)?
P0300
P0171
P0128
P0172
Intake manifold gaskets on a V-type engine can fail due to what factor?
Relative movement between the intake manifold and the cylinder head
Coolant damage
Fretting
All of the above
What precautions should be adhered to when installing a plastic intake manifold?
Install new gaskets if required
Double check the fastener torque specifications
Tighten all fasteners in the specified order
All of the above
The torque specification for many plastic intake manifolds are in what unit?
Ft-lb per Min
pound-ft
Lb-ft per second
pound inches
What is the recommended unit for expressing torque?
Ft-lbs per minute
Pound-feet
Lb-ft per second
Pound-inches
When replacing a timing belt, which additional component(s) is/are often recommended to be replaced as well?
Water pump
Camshaft oil seal(s)
Tensioner assembly
All of the above
Which of the following is NOT a function of engine mounts?
Transfer engine vibrations into the body of the vehicle
Isolate engine noise from the frame of the vehicle
Support the weight of the engine
Support the torque of the powertrain
What viscosity of engine oil is usually required for hybrid electric vehicles?
SAE 10W-30
SAE 0W-20
SAE 5W-40
SAE 5W-30
Technician A uses a steel gasket scraper on aluminum engine parts. Technician B uses a plastic or wood scraper on aluminum engine parts. Which technician is correct?
Technician A only
Technician B only
Both technicians
Neither technician
Which step is necessary when an intake manifold gasket has been replaced due to a vacuum leak?
Air cleaner check
Idle relearn
Refilling the cooling system
Torquing the manifold bolts
What does a skewed thermostat indicate when it is not working?
Missing the thermo wax in the heat sensor
Contaminated with coolant
Working, but not at the correct temperature
Not working
Which gas is used to diagnose a lean exhaust and a vacuum leak around the intake manifold gasket?
Shop air
Propane
Sprayed gasoline
Rock salt
What additional component might a timing belt drive in some engines?
AC compressor
Power steering
Alternator
Water pump
What feature allows a hybrid electric vehicle to start and run without warning?
Battery save
Idle stop
Self-start
False off
What does bright orange covering on wiring under the hood of a late model vehicle indicate?
High voltage electrical system
High pressure hydraulic systems
High pressure air conditioning system
None of these
When changing a timing belt, it is recommended that which of the following also be replaced?
Air pump seal
Front crankshaft seal
Air intake hoses
Air filter
True or False: Coolant leaking from an intake manifold can evaporate fast enough to leave no trace of a leak.
True
False
