FADA CERTIFICATION PRACTICE EXAM QUESTIONS AND ANSWERS
After replacing the lower radiator hose and adding coolant, the engine continues to over heat. which of
the following is MOST likely causing this condition? - CORRECT ANSWER✅✅An air pocket in the cooling
system
A vehicle is emitting black-colored exhaust. Which of these could be the cause? - CORRECT
ANSWER✅✅A rich air to fuel ratio
All of the following statements are true about an engines PCV system except: - CORRECT
ANSWER✅✅the PCV valve should not rattle when shaken
a cylinder power balance test indicates two adjacent cylinders are under performing. Which of the
following is causing this test result? - CORRECT ANSWER✅✅A leaking head gasket
an engine has excessive crankshaft endplay. Which of the following is MOST likely causing this
condition? - CORRECT ANSWER✅✅Thrust bearing
A cylinder compression test indicates the #1 cylinder is below specifications. After injecting oil, the
pressure remains the same. Which of the following could be the case? - CORRECT ANSWER✅✅A bad
valve
one spark plugs ceramic insulator is longer than the others. Which of the following is correct?
-Spark plugs have different heat ranges
-spark plugs are self cleaning
-spark plug resistance can be tested using a digital multi-meter
-all of the above - CORRECT ANSWER✅✅all of the above
A vehicle with an eight cylinder engine and a manual transmission has a knocking sound at the back of
the engine whenever the engine is running. Which of these could be the cause? - CORRECT
ANSWER✅✅loose flywheel bolts
, During a cylinder leakage test , a hissing sound is heard coming from the throttle bottle. This sound
indicates: - CORRECT ANSWER✅✅A bad intake valve
Vehicle has white colored exhaust emitting from its tailpipe at all engine speeds. Which of these could
be the cause? - CORRECT ANSWER✅✅leaking head gasket
RTV (Room Temperature Vulcanizing) aerobic sealant: - CORRECT ANSWER✅✅cures in the presence of
air
A high mileage engine has a knocking sound that goes away as it warms and reaches operating
temperature. Which of these is MOST likely causing this noise? - CORRECT ANSWER✅✅piston to wall
clearance
technician A says preignition occurs when a flame front ignites in the combustion chamber before the
spark plug fires. Technician B says installing the wrong spark plug in an engine can result in detonation.
Who is correct? - CORRECT ANSWER✅✅Both a and b
A turbocharged engine emits blue grey exhaust. Which of these could be the cause? - CORRECT
ANSWER✅✅faulty turbocharger oil seals
there is a loud squeal at the front of a supercharged V6 engine that gets louder as the engine is
accelerated. Which of the following is causing this noise? - CORRECT ANSWER✅✅the front roller
bearings
A vehicle's engine is slow cranking. Which of the following should the technician check first? - CORRECT
ANSWER✅✅the battery
A vehicle with a new fully charged battery continues to discharge overnight. A battery state of charge
test indicates 9.2 volts the next morning . Which test is used to diagnose this condition? - CORRECT
ANSWER✅✅a parasitic drain test
After replacing the lower radiator hose and adding coolant, the engine continues to over heat. which of
the following is MOST likely causing this condition? - CORRECT ANSWER✅✅An air pocket in the cooling
system
A vehicle is emitting black-colored exhaust. Which of these could be the cause? - CORRECT
ANSWER✅✅A rich air to fuel ratio
All of the following statements are true about an engines PCV system except: - CORRECT
ANSWER✅✅the PCV valve should not rattle when shaken
a cylinder power balance test indicates two adjacent cylinders are under performing. Which of the
following is causing this test result? - CORRECT ANSWER✅✅A leaking head gasket
an engine has excessive crankshaft endplay. Which of the following is MOST likely causing this
condition? - CORRECT ANSWER✅✅Thrust bearing
A cylinder compression test indicates the #1 cylinder is below specifications. After injecting oil, the
pressure remains the same. Which of the following could be the case? - CORRECT ANSWER✅✅A bad
valve
one spark plugs ceramic insulator is longer than the others. Which of the following is correct?
-Spark plugs have different heat ranges
-spark plugs are self cleaning
-spark plug resistance can be tested using a digital multi-meter
-all of the above - CORRECT ANSWER✅✅all of the above
A vehicle with an eight cylinder engine and a manual transmission has a knocking sound at the back of
the engine whenever the engine is running. Which of these could be the cause? - CORRECT
ANSWER✅✅loose flywheel bolts
, During a cylinder leakage test , a hissing sound is heard coming from the throttle bottle. This sound
indicates: - CORRECT ANSWER✅✅A bad intake valve
Vehicle has white colored exhaust emitting from its tailpipe at all engine speeds. Which of these could
be the cause? - CORRECT ANSWER✅✅leaking head gasket
RTV (Room Temperature Vulcanizing) aerobic sealant: - CORRECT ANSWER✅✅cures in the presence of
air
A high mileage engine has a knocking sound that goes away as it warms and reaches operating
temperature. Which of these is MOST likely causing this noise? - CORRECT ANSWER✅✅piston to wall
clearance
technician A says preignition occurs when a flame front ignites in the combustion chamber before the
spark plug fires. Technician B says installing the wrong spark plug in an engine can result in detonation.
Who is correct? - CORRECT ANSWER✅✅Both a and b
A turbocharged engine emits blue grey exhaust. Which of these could be the cause? - CORRECT
ANSWER✅✅faulty turbocharger oil seals
there is a loud squeal at the front of a supercharged V6 engine that gets louder as the engine is
accelerated. Which of the following is causing this noise? - CORRECT ANSWER✅✅the front roller
bearings
A vehicle's engine is slow cranking. Which of the following should the technician check first? - CORRECT
ANSWER✅✅the battery
A vehicle with a new fully charged battery continues to discharge overnight. A battery state of charge
test indicates 9.2 volts the next morning . Which test is used to diagnose this condition? - CORRECT
ANSWER✅✅a parasitic drain test
