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ENGINE REPAIR MICHIG AN
MECHANIC STUDY GUIDE A+
SCORE ASSURED (100% VERIFIED)
Question :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.
C. VALVE TAPPET CLEARANCE SHOULD BE
ADJUSTED AT BDC AT THE END OF THE
EXHAUST STROKE.
D. NONE OF THE ABOVE.
Correct answer:B. VALVE TAPPET CLEARANCE
SHOULD BE ADJUSTED AT TDC AT THE END OF
THE COMPRESSION STROKE.
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Question :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.
C. CHECK LIFTER CLEARANCE HOT.
D. CHECK LIFTER CLEARANCE COLD.
Correct answer:B. CHECK CRANKCASE OIL LEVEL.
Question :THE VALVE TIMING ON MOST ENGINES
IS CONTROLLED BY:
A. AN ON BOARD COMPUTER.
B. A CENTRIFUGAL ADVANCE UNIT .
C. A VACUUM ADVANCE UNIT
D. A BELT, CHAIN OR GEAR DRIVE.
Correct answer:D. A BELT, CHAIN OR GEAR DRIVE.
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Question :THE BEARING INSERTS BELOW HAVE
BEEN PLASTIGAGED. WHAT CAN YOU
DETERMINE ABOUT THESE PICTURES?
A. BOTH BEARING JOURNALS ARE OUT OF
ROUND.
- INSERT "B" HAS MORE CLEARANCE.
- INSERT"A" HAS MORE CLEARANCE.
D. BOTH BEARINGS HAVE EXCESSIVE TAPER.
Correct answer:C. INSERT"A" HAS MORE
CLEARANCE.
Question :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.
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D. A BURNED INTAKE VALVE.
Correct answer:C. A BLOWN HEAD GASKET.
Question :EXCESSIVELY WORN VALVE GUIDES: