Engine Repair Midterm Exam Questions
and Answers Latest Version Already
Passed
An engine cranks but does not start. Fuel pressure is normal and spark is present. What is the
most likely cause?
A. Weak starter motor
✔✔B. Incorrect valve timing
C. Blown head gasket
D. Dirty air filter
What is the function of the oil control ring on a piston?
A. Seals the combustion chamber
B. Transfers heat from the piston to the cylinder wall
✔✔C. Scrapes excess oil off the cylinder wall
D. Controls the compression ratio
A technician finds low compression on cylinder #3. Which of the following could be the cause?
✔✔A. Burned exhaust valve
1
,B. Slipping serpentine belt
C. Dirty throttle body
D. Bad oxygen sensor
A customer reports oil consumption with no visible leaks. What is a likely cause?
A. Faulty PCV valve
✔✔B. Worn valve stem seals
C. Stuck thermostat
D. Loose fan belt
Which of the following would most likely cause engine overheating at highway speeds?
A. Dirty fuel injectors
B. Failing starter motor
✔✔C. Clogged radiator
D. Malfunctioning oxygen sensor
What is the purpose of the harmonic balancer?
A. Boosts alternator output
2
, B. Regulates oil pressure
✔✔C. Dampens crankshaft vibrations
D. Synchronizes valve timing
Which condition would most likely cause engine pinging under load?
A. High engine oil pressure
✔✔B. Incorrect ignition timing
C. Weak valve springs
D. Dirty cabin air filter
A technician replaces a head gasket. What should be done before reassembly?
✔✔A. Check cylinder head for warpage
B. Drain transmission fluid
C. Replace wheel bearings
D. Adjust drive belt tension
A leaking intake manifold gasket can cause which of the following?
✔✔A. Rough idle and lean condition
3
and Answers Latest Version Already
Passed
An engine cranks but does not start. Fuel pressure is normal and spark is present. What is the
most likely cause?
A. Weak starter motor
✔✔B. Incorrect valve timing
C. Blown head gasket
D. Dirty air filter
What is the function of the oil control ring on a piston?
A. Seals the combustion chamber
B. Transfers heat from the piston to the cylinder wall
✔✔C. Scrapes excess oil off the cylinder wall
D. Controls the compression ratio
A technician finds low compression on cylinder #3. Which of the following could be the cause?
✔✔A. Burned exhaust valve
1
,B. Slipping serpentine belt
C. Dirty throttle body
D. Bad oxygen sensor
A customer reports oil consumption with no visible leaks. What is a likely cause?
A. Faulty PCV valve
✔✔B. Worn valve stem seals
C. Stuck thermostat
D. Loose fan belt
Which of the following would most likely cause engine overheating at highway speeds?
A. Dirty fuel injectors
B. Failing starter motor
✔✔C. Clogged radiator
D. Malfunctioning oxygen sensor
What is the purpose of the harmonic balancer?
A. Boosts alternator output
2
, B. Regulates oil pressure
✔✔C. Dampens crankshaft vibrations
D. Synchronizes valve timing
Which condition would most likely cause engine pinging under load?
A. High engine oil pressure
✔✔B. Incorrect ignition timing
C. Weak valve springs
D. Dirty cabin air filter
A technician replaces a head gasket. What should be done before reassembly?
✔✔A. Check cylinder head for warpage
B. Drain transmission fluid
C. Replace wheel bearings
D. Adjust drive belt tension
A leaking intake manifold gasket can cause which of the following?
✔✔A. Rough idle and lean condition
3
