ENGINE REPAIR MICHIGAN MECHANIC STUDY GUIDE
WHICH OF THE FOLLOWING IS TRUE ABOUT A. THE VALVE TAPPET CLEARENCE ON A HIGH MILEAGE EGINE
ADJUSTING VALVE TAPPET CLEARANCE 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 NOISYAT A. CHECK LIFTER LEAKDOWN RATE.
HIGHWAY SPEEDS BUT QUIET AT LOW SPEEDS. B.CHECK CRANKCASE OIL LEVEL. (CORRECT AWNSER)
WHAT SHOULD YOU DO FIRST AS YOU C. CHECK LIFTER CLEARANCE HOT. (NOT CORRECT AWNSER)
DIAGNOSE THIS PROBLEM? D.CHECK LIFTER CLEARANCE COLD.
THE VALVE TIMING ON MOST ENGINES IS A. AN ON BOARD COMPUTER. (NOT CORRECT AWNSER)
CONTROLLED BY: 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 A. BOTH BEARING JOURNALS ARE OUT OF ROUND. (NOT CORRECT
PLASTIGAGED. WHAT CAN YOU DETERMINE AWNSER)
ABOUT THESE PICTURES? B.INSERT "B" HAS MORE CLEARANCE.
C. INSERT"A" HAS MORE CLEARANCE.
D.BOTH BEARINGS HAVE EXCESSIVE TAPER.
THE COMPRESSION TEST HAS SHOWED THAT A. A BURNED EXHAUST VALVE
THE MIDDLE TWO CYLINDERS ON ONE SIDE OF A B. A BLOWN INTAKE MANIFOLD GASKET.
V-8 ENGINE HAD READINGS OF 50 PSI. THE C. A BLOWN HEAD GASKET. (CORRECT AWNSER)
OTHER CYLINDERS HAD READINGS BETWEEN D. A BURNED INTAKE VALVE. (NOT CORRECT AWNSER)
135 PSI AND 140 PSI. WHAT IS THE LIKELY CAUSE
OF THIS CONDITION?
, 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 AWNSER)
INTAKE VALVE DEPOSITS, AS SHOWN BELOW: A. WILL NOT AFFECT ENGINE PERFORMANCE.
B.CAN REDUCE VOLUMETRIC EFFICIENCYAND 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 A. INSTALLED HEIGHT (CORRECT AWNSER)
IN THE ILLUSTRATION BELOW? B.SQUARENESS
C. COIL TAPER
D. TENSION (NOT CORRECT AWNSER)
YOU ARE USING A VACUUM GAUGE A. WHEN THE ENGINE IS RAPIDLY ACCELERATED, THE NEEDLE WILL
CONNECTED TO THE INTAKE MANIFOLD. RISE TO A HIGH READING. (POSSIBLE CORRECT AWNSER)
WHICH OF THE FOLLOWING IS TRUE? 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 AWNSER)
WHAT ARE THE MINIMUM AND MAXIMUM A. 2.062-2.250 (NOT CORRECT AWNSER)
MEASUREMENTS OF A SHAFT GIVEN 2.125 B.1.975-2.275
PLUS OR MINIUS .015? C. 2.110-2.140 (CORRECT AWNSER)
D.2.124-2.126
THE MECHANIC HAS DETERMINED THAT NO FUEL A. DISCONNECTED LINKAGE.
SQUIRTS INTO THE CARBURETOT WHEN THE B. A HARDENED ACCELERATOR PUMP PLUNGER.
THROTTLE IS OPENED QUICKLY. WHAT COULD BE C. A PLUGGED PUMP NOZZLE.
CAUSED BY: D. ALL OF THE ABOVE. (CORRECT AWNSER)
A WARM ENGINE HAS LOW OIL PRESSURE. THE A. LEAKY MAIN BEARING SEALS. (CORRECT AWNSER)
MOST LIKELY CAUSE OF THE LOW OIL PRESSURE B. WORN VALVE GUIDES.
IS: C. WORN BEARINGS.
D.LEAKY HYDRAULIC LIFTERS (NOT CORRECT AWNSER)
WHAT IS THE READING OF THE 0-1 INCH A. 0.575" (NOT CORRECT AWNSER)
MICROMETER BELOW? B.0.599"
C. 5.750" (CORRECT AWNSER)
D.1.599"
YOU ARE REINSTALLING PISTONS WITH NEW A. CHECK THE RING END GAP. (CORRECT AWNSER)
RINGS. THE RING COMPRESSOR WILL NOT FIT B.FILE THE LANDS.
TIGHT AROUND A PISTON SKIRT AND THE RINGS C. USE A RIDGE REAMER.
BIND ON THE BLOCK SURFACE. WHAT SHOULD D.HONEN THE CYLINDER FOR MORE CLEARENCE. (NOT CORRECT
YOU DO? AWNSER)
WHICH OF THE FOLLOWING IS TRUE ABOUT A. THE VALVE TAPPET CLEARENCE ON A HIGH MILEAGE EGINE
ADJUSTING VALVE TAPPET CLEARANCE 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 NOISYAT A. CHECK LIFTER LEAKDOWN RATE.
HIGHWAY SPEEDS BUT QUIET AT LOW SPEEDS. B.CHECK CRANKCASE OIL LEVEL. (CORRECT AWNSER)
WHAT SHOULD YOU DO FIRST AS YOU C. CHECK LIFTER CLEARANCE HOT. (NOT CORRECT AWNSER)
DIAGNOSE THIS PROBLEM? D.CHECK LIFTER CLEARANCE COLD.
THE VALVE TIMING ON MOST ENGINES IS A. AN ON BOARD COMPUTER. (NOT CORRECT AWNSER)
CONTROLLED BY: 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 A. BOTH BEARING JOURNALS ARE OUT OF ROUND. (NOT CORRECT
PLASTIGAGED. WHAT CAN YOU DETERMINE AWNSER)
ABOUT THESE PICTURES? B.INSERT "B" HAS MORE CLEARANCE.
C. INSERT"A" HAS MORE CLEARANCE.
D.BOTH BEARINGS HAVE EXCESSIVE TAPER.
THE COMPRESSION TEST HAS SHOWED THAT A. A BURNED EXHAUST VALVE
THE MIDDLE TWO CYLINDERS ON ONE SIDE OF A B. A BLOWN INTAKE MANIFOLD GASKET.
V-8 ENGINE HAD READINGS OF 50 PSI. THE C. A BLOWN HEAD GASKET. (CORRECT AWNSER)
OTHER CYLINDERS HAD READINGS BETWEEN D. A BURNED INTAKE VALVE. (NOT CORRECT AWNSER)
135 PSI AND 140 PSI. WHAT IS THE LIKELY CAUSE
OF THIS CONDITION?
, 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 AWNSER)
INTAKE VALVE DEPOSITS, AS SHOWN BELOW: A. WILL NOT AFFECT ENGINE PERFORMANCE.
B.CAN REDUCE VOLUMETRIC EFFICIENCYAND 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 A. INSTALLED HEIGHT (CORRECT AWNSER)
IN THE ILLUSTRATION BELOW? B.SQUARENESS
C. COIL TAPER
D. TENSION (NOT CORRECT AWNSER)
YOU ARE USING A VACUUM GAUGE A. WHEN THE ENGINE IS RAPIDLY ACCELERATED, THE NEEDLE WILL
CONNECTED TO THE INTAKE MANIFOLD. RISE TO A HIGH READING. (POSSIBLE CORRECT AWNSER)
WHICH OF THE FOLLOWING IS TRUE? 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 AWNSER)
WHAT ARE THE MINIMUM AND MAXIMUM A. 2.062-2.250 (NOT CORRECT AWNSER)
MEASUREMENTS OF A SHAFT GIVEN 2.125 B.1.975-2.275
PLUS OR MINIUS .015? C. 2.110-2.140 (CORRECT AWNSER)
D.2.124-2.126
THE MECHANIC HAS DETERMINED THAT NO FUEL A. DISCONNECTED LINKAGE.
SQUIRTS INTO THE CARBURETOT WHEN THE B. A HARDENED ACCELERATOR PUMP PLUNGER.
THROTTLE IS OPENED QUICKLY. WHAT COULD BE C. A PLUGGED PUMP NOZZLE.
CAUSED BY: D. ALL OF THE ABOVE. (CORRECT AWNSER)
A WARM ENGINE HAS LOW OIL PRESSURE. THE A. LEAKY MAIN BEARING SEALS. (CORRECT AWNSER)
MOST LIKELY CAUSE OF THE LOW OIL PRESSURE B. WORN VALVE GUIDES.
IS: C. WORN BEARINGS.
D.LEAKY HYDRAULIC LIFTERS (NOT CORRECT AWNSER)
WHAT IS THE READING OF THE 0-1 INCH A. 0.575" (NOT CORRECT AWNSER)
MICROMETER BELOW? B.0.599"
C. 5.750" (CORRECT AWNSER)
D.1.599"
YOU ARE REINSTALLING PISTONS WITH NEW A. CHECK THE RING END GAP. (CORRECT AWNSER)
RINGS. THE RING COMPRESSOR WILL NOT FIT B.FILE THE LANDS.
TIGHT AROUND A PISTON SKIRT AND THE RINGS C. USE A RIDGE REAMER.
BIND ON THE BLOCK SURFACE. WHAT SHOULD D.HONEN THE CYLINDER FOR MORE CLEARENCE. (NOT CORRECT
YOU DO? AWNSER)
