with Confidence
A1 QUIZ 1 of 1
The reading on the outside metric micrometer in the illustration above indicates: - correct answer
✔✔6.50mm
A1 QUIZ 1 of 2
When removing and replacing piston rings on a cast aluminum alloy piston, the technician should: -
correct answer ✔✔Use the new ring and a feeler gauge to measure piston ring groove clearance.
A1 QUIZ 1 of 3
During a cylinder power balance test on a COP ignition system, the RPM drop of #5 cylinder is less than
the others. All of the following will cause this test result EXCEPT: - correct answer ✔✔A faulty fuel
pressure regulator
A1 QUIZ 1 of 4
A turbocharged engine has poor high-end performance. Technician A says too much exhausts pressure
bypassing the turbine wheel results in this condition. Technician B says a stuck closed wastegate results
in underboost and poor high-end performance. Who is correct? - correct answer ✔✔Technician A
A1 QUIZ 1 of 5
Which of the following is MOST likely causing an engine to have excessive crankshaft endplay? - correct
answer ✔✔Worn thrust bearings.
A1 QUIZ 1 of 6
A compression test indicates the number one cylinder's compression is below specifications. The
compression increases after injecting oil into the cylinder. Which of the following is causing this test
result? - correct answer ✔✔Worn piston rings.
A1 QUIZ 1 of 7
A vehicle has blue-gray colored exhaust emitting from it's tailpipe. All of the following results in this
condition EXCEPT: - correct answer ✔✔A Leaking Fuel Injector.
,A1 QUIZ 1 of 8
A ridge has formed on an engine block just above the piston ring's travel. Which of the following is used
to remove this ridge? - correct answer ✔✔A cylinder ridge reamer.
A1 QUIZ 1 of 9
A vehicle briefly blows blue-gray exhaust smoke from it's tailpipe only in the morning or after it's been
sitting for a while. Which of the following is causing this condition? - correct answer ✔✔Leaking valve
stem seals
A1 QUIZ 1 of 10
An engine's radiator hose collapses as the engine cools. Which of the following is MOST likely causing
this condition? - correct answer ✔✔A Faulty Radiator Cap.
A1 QUIZ 1 or 11
After diagnosing and replacing the cooling system's water pump, the vehicle's engine continues to
overheat. Which of these is the MOST likely cause. - correct answer ✔✔An air pocket in the system.
A1 QUIZ 1 of 12
Two technicians are discussing engine sealants and form in place gaskets.Technician A says sealants such
as RTV are aerobic. Technician B says some sensors may be damaged if an unapproved sealant is
used.Who is correct? - correct answer ✔✔Both A and B
A1 QUIZ 1 of 13
An engine has a noise that goes away as the engine warms and reaches operating temperature. Which of
these is MOST likely the cause of this condition. - correct answer ✔✔Piston to wall clearance
A1 QUIZ 1 of 14
An engine suffers from detonation. Technician A this may be caused by a defective EGR valve. Technician
B says advanced ignition timing can cause this condition. Who is correct? - correct answer ✔✔Both A
and B
,A1 QUIZ 1 of 15
Technician A says faulty turbocharger bearings will result in a loss of engine oil. Technician B says a dirty
turbocharger air filter will result in a loss of engine oil. Who is correct? - correct answer ✔✔Technician A
A1 QUIZ 1 of 16
A squeal is heard in the front of a supercharged V6 engine. This squeal gets louder as the engine is
accelerated. Which of the following would cause this condition? - correct answer ✔✔Both A and B
A1 QUIZ 1 of 17
A vehicle's engine is sluggish and slow to crank. Technician A says to check the starter and its circuit first.
Technician B says to check the voltage, capacity, and condition of the battery.Who is correct? - correct
answer ✔✔Technician B
A1 QUIZ 1 of 18
A vehicle's battery is good and passes all testing,but continues to die overnight. It's being tested for
parasitic battery drain. Technician A says to set the meter to measure voltage and connect the probes in
series between the positive terminal and the battery post. Technician B says to set the meter to measure
amperage and connect the probes in series between the negative battery terminal and the negative
battery post. Who is correct? - correct answer ✔✔Technician B
A1 QUIZ 1 of 19
Two technicians are discussing cylinder bore measurements. Technician A says the cylinder's bore should
be measured for out of round. Technician B says the cylinder's bore should be measured and checked for
taper. Who is correct? - correct answer ✔✔Both A and B
A1 QUIZ 1 OF 20
Technician A says that connecting rods and caps are matched and can not be mixed. Technician B says it
may be necessary to mark these parts for reassembly. Who is correct? - correct answer ✔✔Both A and B
A1 QUIZ 2 OF 1
Engine crack repair is being discussed. Technician A says metal pinning is an accepted method of cracked
cylinder head repair.
, Technician B says metal pinning is an accepted method of cracked engine block repair.Who is correct? -
correct answer ✔✔Both A and B
A1 QUIZ 2 OF 2
Which of these is LEAST likely to cause low oil pressure in an engine. - correct answer ✔✔Worn valve
guides
A1 QUIZ 2 OF 3
Technician A says valve spring installed height is measured from the outer edge of the valve spring
retainer to the pocket in the cylinder head.Technician B says that too thin of a valve margin will not effect
its operating temperature. Who is correct? - correct answer ✔✔Technician A
A1 QUIZ 2 OF 4
Technician A says that magnetic particle detection is an acceptable method to detect cracks in aluminum
castings. Technician B says a special dye is used to detect cracks in aluminum castings. Who is correct? -
correct answer ✔✔Technician B
A1 QUIZ 2 OF 5
Technician A says that minor scoring on the surface of a flywheel can be removed. Technician B says if
the transmission flexplate's ring gear shows excessive wear or cracking it must be replaced. Who is
correct? - correct answer ✔✔Both A and B
A1 QUIZ 2 OF 6
Two technicians are discussing the camshaft in a V8 engine. Technician A says to use an outside
micrometer to measure the diameter of a camshaft journal. Technician B says a camshaft spins twice for
every one revolution of the crankshaft. Who is correct? - correct answer ✔✔Technician A
A1 QUIZ 2 OF 7
A vehicle is emitting black exhaust from its tailpipe under all driving conditions. This is because: - correct
answer ✔✔There is too much fuel in the combustion chamber.
A1 QUIZ 2 OF 8