ENGINE REPAIR MICHIGAN MECHANIC
NEWEST EXAM WITH CORRECT ANSWERS
Which of the following is true about adjusting valve tappet
clearance a. The valve tappet clearence on a high mileage egine
should be adjusted tighter than specifications for a newly rebuilt
engine.
B. Valve tappet clearance should be adjusted at tdc at the end of
the compression stroke. (Correct Answer)
C. Valve tappet clearance should be adjusted at bdc at the end of
the exhaust stroke.
D. None of the above. not Correct Answer
The hydraulic lifters are noisy at highway speeds but quiet at low
speeds. What should you do first as you diagnose this problem?
A. Check lifter leakdown rate.
B. Check crankcase oil level. (Correct Answer)
C. Check lifter clearance hot. not Correct Answer
D. Check lifter clearance cold.
The valve timing on most engines is controlled by: a. An on board
computer. not Correct Answer
B. A centrifugal advance unit.
C. A vacuum advance unit
,D. A belt, chain or gear drive. (Correct Answer)
The bearing inserts below have been plastigaged. What can you
determine about these pictures? A. Both bearing journals are out
of round. not Correct Answer
B. Insert "b" has more clearance.
C. Insert"a" has more clearance.
D. Both bearings have excessive taper.
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. A burned exhaust valve
B. A blown intake manifold gasket.
C. A blown head gasket. (Correct Answer)
D. A burned intake valve. not Correct Answer
Excessively worn valve guides: a. May be replaced if removable.
B. May be reamed to oversize.
C. May cause oil consumption.
D. All of the above. (Correct Answer)
Intake valve deposits, as shown below: a. Will not affect engine
performance.
, B. Can reduce volumetric efficiency and affect high rpm
performance.
C. Can cause driveability problems during cold engine operation.
D. Both b and c. (Correct Answer)
What is being checked on the valve spring in the illustration
below? A. Installed height (Correct Answer)
B. Squareness
C. Coil taper
D. Tension not Correct Answer
You are using a vacuum gauge connected to the intake manifold.
Which of the following is true? A. When the engine is rapidly
accelerated, the needle will rise to a high reading. (possible
Correct Answer)
B. When the throtle is released suddenly from 2500 rpm, the
needle will snap to a higher than normal reading for an instant.
C. A "normal" gauge reading at idle would be 7-10 inches.
D. All of the above. not Correct Answer
What are the minimum and maximum measurements of a shaft
given 2.125 plus or minius .015? A. 2.062-2.250 not Correct
Answer
B. 1.975-2.275
NEWEST EXAM WITH CORRECT ANSWERS
Which of the following is true about adjusting valve tappet
clearance a. The valve tappet clearence on a high mileage egine
should be adjusted tighter than specifications for a newly rebuilt
engine.
B. Valve tappet clearance should be adjusted at tdc at the end of
the compression stroke. (Correct Answer)
C. Valve tappet clearance should be adjusted at bdc at the end of
the exhaust stroke.
D. None of the above. not Correct Answer
The hydraulic lifters are noisy at highway speeds but quiet at low
speeds. What should you do first as you diagnose this problem?
A. Check lifter leakdown rate.
B. Check crankcase oil level. (Correct Answer)
C. Check lifter clearance hot. not Correct Answer
D. Check lifter clearance cold.
The valve timing on most engines is controlled by: a. An on board
computer. not Correct Answer
B. A centrifugal advance unit.
C. A vacuum advance unit
,D. A belt, chain or gear drive. (Correct Answer)
The bearing inserts below have been plastigaged. What can you
determine about these pictures? A. Both bearing journals are out
of round. not Correct Answer
B. Insert "b" has more clearance.
C. Insert"a" has more clearance.
D. Both bearings have excessive taper.
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. A burned exhaust valve
B. A blown intake manifold gasket.
C. A blown head gasket. (Correct Answer)
D. A burned intake valve. not Correct Answer
Excessively worn valve guides: a. May be replaced if removable.
B. May be reamed to oversize.
C. May cause oil consumption.
D. All of the above. (Correct Answer)
Intake valve deposits, as shown below: a. Will not affect engine
performance.
, B. Can reduce volumetric efficiency and affect high rpm
performance.
C. Can cause driveability problems during cold engine operation.
D. Both b and c. (Correct Answer)
What is being checked on the valve spring in the illustration
below? A. Installed height (Correct Answer)
B. Squareness
C. Coil taper
D. Tension not Correct Answer
You are using a vacuum gauge connected to the intake manifold.
Which of the following is true? A. When the engine is rapidly
accelerated, the needle will rise to a high reading. (possible
Correct Answer)
B. When the throtle is released suddenly from 2500 rpm, the
needle will snap to a higher than normal reading for an instant.
C. A "normal" gauge reading at idle would be 7-10 inches.
D. All of the above. not Correct Answer
What are the minimum and maximum measurements of a shaft
given 2.125 plus or minius .015? A. 2.062-2.250 not Correct
Answer
B. 1.975-2.275
