SOS MECHANIC CERTIFICATE -ENGINE REPAIR
QUESTIONS & ANSWERS 2024 ( A+ GRADED 100%
VERIFIED)
1. Which of the following is true about adjusting valve tappet
clearance: valve tappet clearance should be adjusted at tdc at the end of
the compression stroke.
2. The hydraulic lifters are noisy at highway speeds but quiet at low
speeds. What should you do first as you diagnose this problem?:
check crankcase oil level.
3. The valve timing on most engines is controlled by:: a belt,
Chain or gear drive
4. The bearing inserts below have been plastigaged. What can you
determine about these pictures?: insert"a" has more clearance.
5. The compression test has showed that the middle two cylinders on
one side of a v-8 engine had readings of 50 psi. The other cylinders
had readings between 135 psi and 140 psi. What is the likely cause of
this condition?: a blown head gasket.
6. Excessively worn valve guides:: all of the above.
7. Intake valve deposits, as shown below:: both b and c
8. What is being checked on the valve spring in the illustration
Below?: installed height
9. You are using a vacuum gauge connected to the intake manifold.
Which of the following is true?: when the engine is rapidly accelerated,
the needle will rise to a high reading.
10. What are the minimum and maximum measurements of a shaft
Given 2.125 plus or minius .015?: 2.062-2.250
11. The mechanic has determined that no fuel squirts into the carburetot
when the throttle is opened quickly. What could be caused by:: all of
the above.
12. A warm engine has low oil pressure. The most likely cause of
The low oil pressure is:: leaky main bearing seals
13. What is the reading of the 0-1 inch micrometer below?: 5.750" wrong
1.599 is prob right answer
1/4
QUESTIONS & ANSWERS 2024 ( A+ GRADED 100%
VERIFIED)
1. Which of the following is true about adjusting valve tappet
clearance: valve tappet clearance should be adjusted at tdc at the end of
the compression stroke.
2. The hydraulic lifters are noisy at highway speeds but quiet at low
speeds. What should you do first as you diagnose this problem?:
check crankcase oil level.
3. The valve timing on most engines is controlled by:: a belt,
Chain or gear drive
4. The bearing inserts below have been plastigaged. What can you
determine about these pictures?: insert"a" has more clearance.
5. The compression test has showed that the middle two cylinders on
one side of a v-8 engine had readings of 50 psi. The other cylinders
had readings between 135 psi and 140 psi. What is the likely cause of
this condition?: a blown head gasket.
6. Excessively worn valve guides:: all of the above.
7. Intake valve deposits, as shown below:: both b and c
8. What is being checked on the valve spring in the illustration
Below?: installed height
9. You are using a vacuum gauge connected to the intake manifold.
Which of the following is true?: when the engine is rapidly accelerated,
the needle will rise to a high reading.
10. What are the minimum and maximum measurements of a shaft
Given 2.125 plus or minius .015?: 2.062-2.250
11. The mechanic has determined that no fuel squirts into the carburetot
when the throttle is opened quickly. What could be caused by:: all of
the above.
12. A warm engine has low oil pressure. The most likely cause of
The low oil pressure is:: leaky main bearing seals
13. What is the reading of the 0-1 inch micrometer below?: 5.750" wrong
1.599 is prob right answer
1/4
