FADA CERTIFICATION PRACTICE
EXAM 2025/2026 QUESTIONS AND
ANSWERS 100% PASS
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? - ANS An air pocket in the
cooling system
A vehicle is emitting black-colored exhaust. Which of these could be the cause? - ANS A rich
air to fuel ratio
All of the following statements are true about an engines PCV system except: - ANS 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? - ANS A leaking head gasket
an engine has excessive crankshaft endplay. Which of the following is MOST likely causing this
condition? - ANS 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? - ANS A bad valve
one spark plugs ceramic insulator is longer than the others. Which of the following is correct?
pg. 1 @COPYRIGHT 2025/2026 ALLRIGHTS RESERVED
, -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 - ANS 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? -
ANS loose flywheel bolts
During a cylinder leakage test , a hissing sound is heard coming from the throttle bottle. This
sound indicates: - ANS A bad intake valve
Vehicle has white colored exhaust emitting from its tailpipe at all engine speeds. Which of these
could be the cause? - ANS leaking head gasket
RTV (Room Temperature Vulcanizing) aerobic sealant: - ANS 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? - ANS 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? - ANS Both a and b
A turbocharged engine emits blue grey exhaust. Which of these could be the cause? -
ANS 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? - ANS the front roller bearings
pg. 2 @COPYRIGHT 2025/2026 ALLRIGHTS RESERVED
EXAM 2025/2026 QUESTIONS AND
ANSWERS 100% PASS
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? - ANS An air pocket in the
cooling system
A vehicle is emitting black-colored exhaust. Which of these could be the cause? - ANS A rich
air to fuel ratio
All of the following statements are true about an engines PCV system except: - ANS 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? - ANS A leaking head gasket
an engine has excessive crankshaft endplay. Which of the following is MOST likely causing this
condition? - ANS 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? - ANS A bad valve
one spark plugs ceramic insulator is longer than the others. Which of the following is correct?
pg. 1 @COPYRIGHT 2025/2026 ALLRIGHTS RESERVED
, -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 - ANS 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? -
ANS loose flywheel bolts
During a cylinder leakage test , a hissing sound is heard coming from the throttle bottle. This
sound indicates: - ANS A bad intake valve
Vehicle has white colored exhaust emitting from its tailpipe at all engine speeds. Which of these
could be the cause? - ANS leaking head gasket
RTV (Room Temperature Vulcanizing) aerobic sealant: - ANS 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? - ANS 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? - ANS Both a and b
A turbocharged engine emits blue grey exhaust. Which of these could be the cause? -
ANS 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? - ANS the front roller bearings
pg. 2 @COPYRIGHT 2025/2026 ALLRIGHTS RESERVED
