ENGINE REPAIR MICHIGAN
MECHANIC STUDY GUIDE UPDATED
ACTUAL Exam Questions and CORRECT
Answers
WHICH OF THE FOLLOWING IS TRUE ABOUT ADJUSTING VALVE TAPPET
CLEARANCE - CORRECT ANSWER - 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 AWNSER)
C. VALVE TAPPET CLEARANCE SHOULD BE ADJUSTED AT BDC AT THE END OF THE
EXHAUST STROKE.
D. NONE OF THE ABOVE. (NOT CORRECT AWNSER)
THE HYDRAULIC LIFTERS ARE NOISY AT HIGHWAY SPEEDS BUT QUIET AT LOW
SPEEDS. WHAT SHOULD YOU DO FIRST AS YOU DIAGNOSE THIS PROBLEM? -
CORRECT ANSWER - A. CHECK LIFTER LEAKDOWN RATE.
B. CHECK CRANKCASE OIL LEVEL. (CORRECT AWNSER)
C. CHECK LIFTER CLEARANCE HOT. (NOT CORRECT AWNSER)
D. CHECK LIFTER CLEARANCE COLD.
THE VALVE TIMING ON MOST ENGINES IS CONTROLLED BY: - CORRECT
ANSWER - A. AN ON BOARD COMPUTER. (NOT CORRECT AWNSER)
B. A CENTRIFUGAL ADVANCE UNIT.
C. A VACUUM ADVANCE UNIT
D. A BELT, CHAIN OR GEAR DRIVE. (CORRECT AWNSER)
THE BEARING INSERTS BELOW HAVE BEEN PLASTIGAGED. WHAT CAN YOU
DETERMINE ABOUT THESE PICTURES? - CORRECT ANSWER - A. BOTH
BEARING JOURNALS ARE OUT OF ROUND. (NOT CORRECT AWNSER)
, 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? - CORRECT ANSWER - A. A BURNED EXHAUST VALVE
B. A BLOWN INTAKE MANIFOLD GASKET.
C. A BLOWN HEAD GASKET. (CORRECT AWNSER)
D. A BURNED INTAKE VALVE. (NOT CORRECT AWNSER)
EXCESSIVELY WORN VALVE GUIDES: - CORRECT ANSWER - A. MAY BE
REPLACED IF REMOVABLE.
B. MAY BE REAMED TO OVERSIZE.
C. MAY CAUSE OIL CONSUMPTION.
D. ALL OF THE ABOVE. (CORRECT AWNSER)
INTAKE VALVE DEPOSITS, AS SHOWN BELOW: - CORRECT ANSWER - 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 AWNSER)
WHAT IS BEING CHECKED ON THE VALVE SPRING IN THE ILLUSTRATION BELOW?
- CORRECT ANSWER - A. INSTALLED HEIGHT (CORRECT AWNSER)
B. SQUARENESS
C. COIL TAPER
D. TENSION (NOT CORRECT AWNSER)
MECHANIC STUDY GUIDE UPDATED
ACTUAL Exam Questions and CORRECT
Answers
WHICH OF THE FOLLOWING IS TRUE ABOUT ADJUSTING VALVE TAPPET
CLEARANCE - CORRECT ANSWER - 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 AWNSER)
C. VALVE TAPPET CLEARANCE SHOULD BE ADJUSTED AT BDC AT THE END OF THE
EXHAUST STROKE.
D. NONE OF THE ABOVE. (NOT CORRECT AWNSER)
THE HYDRAULIC LIFTERS ARE NOISY AT HIGHWAY SPEEDS BUT QUIET AT LOW
SPEEDS. WHAT SHOULD YOU DO FIRST AS YOU DIAGNOSE THIS PROBLEM? -
CORRECT ANSWER - A. CHECK LIFTER LEAKDOWN RATE.
B. CHECK CRANKCASE OIL LEVEL. (CORRECT AWNSER)
C. CHECK LIFTER CLEARANCE HOT. (NOT CORRECT AWNSER)
D. CHECK LIFTER CLEARANCE COLD.
THE VALVE TIMING ON MOST ENGINES IS CONTROLLED BY: - CORRECT
ANSWER - A. AN ON BOARD COMPUTER. (NOT CORRECT AWNSER)
B. A CENTRIFUGAL ADVANCE UNIT.
C. A VACUUM ADVANCE UNIT
D. A BELT, CHAIN OR GEAR DRIVE. (CORRECT AWNSER)
THE BEARING INSERTS BELOW HAVE BEEN PLASTIGAGED. WHAT CAN YOU
DETERMINE ABOUT THESE PICTURES? - CORRECT ANSWER - A. BOTH
BEARING JOURNALS ARE OUT OF ROUND. (NOT CORRECT AWNSER)
, 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? - CORRECT ANSWER - A. A BURNED EXHAUST VALVE
B. A BLOWN INTAKE MANIFOLD GASKET.
C. A BLOWN HEAD GASKET. (CORRECT AWNSER)
D. A BURNED INTAKE VALVE. (NOT CORRECT AWNSER)
EXCESSIVELY WORN VALVE GUIDES: - CORRECT ANSWER - A. MAY BE
REPLACED IF REMOVABLE.
B. MAY BE REAMED TO OVERSIZE.
C. MAY CAUSE OIL CONSUMPTION.
D. ALL OF THE ABOVE. (CORRECT AWNSER)
INTAKE VALVE DEPOSITS, AS SHOWN BELOW: - CORRECT ANSWER - 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 AWNSER)
WHAT IS BEING CHECKED ON THE VALVE SPRING IN THE ILLUSTRATION BELOW?
- CORRECT ANSWER - A. INSTALLED HEIGHT (CORRECT AWNSER)
B. SQUARENESS
C. COIL TAPER
D. TENSION (NOT CORRECT AWNSER)
