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ENGINE REPAIR MICHIGAN MECHANIC STUDY GUIDE Questions with Explanations of Answers | latest upate 2024

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ENGINE REPAIR MICHIGAN MECHANIC STUDY GUIDE Questions with Explanations of Answers | latest upate 2024

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  • June 17, 2024
  • 10
  • 2023/2024
  • Exam (elaborations)
  • Questions & answers

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  • engine repair michigan mechanic study guide questi

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ENGINE REPAIR MICHIGAN MECHANIC
STUDY GUIDE
A BORE GAUGE IS USED TO MEASURE: - ANS -A. TAPER IN CYLINDERS.
(CORRECT AWNSER)
B. PISTON BORE AND STROKE. (NOT CORRECT AWNSER)
C. PISTON RING END GAP.
D. ALL OF THE ABOVE.

A MECHANIC IS CHECKING MAIN BEARING CLEARANCE WITH PLASTIGAGE. IF
THE PLASTIGAGE FLATTENS MORE AT ONE END THAN THE OTHER, IT WOULD
INDICATE: - ANS -A. THE ROD IS BENT (POSSIBLE CORRECT AWNSER)
B. THE CRANK JOURNAL IS TAPERED.
C. THE CRANKSHAFT IS BENT. (NOT CORRECT AWNSER)
D. THE MAIN BEARING IS OVER TORQUED.

A TURBO-CHARGED VEHICLE IS LOW ON POWER. WHICH OF THE FOLLOWING
WOULD CAUSE THIS PROBLEM? - ANS -A. THE TURBO WASTEGAUGE IS
STUCK IN THE CLOSED POSITION. (NOT CORRECT AWNSER)
B. THE IMPELLER IS WORN.
C. THE BELT IS WORN OR LOOSE.
D. ALL OF THE ABOVE. (CORRECT AWNSER)

A WARM ENGINE HAS LOW OIL PRESSURE. THE MOST LIKELY CAUSE OF THE
LOW OIL PRESSURE IS: - ANS -A. LEAKY MAIN BEARING SEALS. (CORRECT
AWNSER)
B. WORN VALVE GUIDES.
C. WORN BEARINGS.
D. LEAKY HYDRAULIC LIFTERS (NOT CORRECT AWNSER)

AFTER CLEANING THE RING GROOVES OF A PISTON, YOU THEN SHOULD
CHECK THE TOP RING GROOVE FOR WEAR. WHAT WOULD YOU USE FOR
MAKING THIS MEASUREMENT? - ANS -A. A TAPERED GAUGE AND AN INSIDE
MICROMETER. (NOT CORRECT AWNSER)
B. A GROOVE GAUGE AND AN OLD PISTON RING.
C. A NEW PISTON RING AND AN OUTSIDE MICROMETER.
D. A FEELER GAUGE AND A NEW PISTON RING.

, AFTER MACHINING THE CYLINDERS, YOU WOULD HONE THE BORES TO: -
ANS -A. PROVIDE PROPER PISTON RING END GAP.
B. REDUCE TAPER.
C. REDUCE OUT-OF-ROUND.
D. PRODUCE THE PROPER SIZE WITH A CROSS HATCH FINISH. (CORRECT
AWNSER)

AN ENGINE HAS A LARGE BUILD-UP OF SLUDGE IN THE CRANKCASE. WHAT
WOULD CAUSE THIS PROBLEM? - ANS -A. A PLUGGED PCV VALVE.
B. A LEAKING NEEDLE AND SEAT IN THE FUEL SYSTEM.
C. LEAKING CAM BEARINGS. (POSSIBLE CORRECT AWNSER)
D. THE PCV VALVE IS STUCK OPEN. (NOT CORRECT AWNSER)

BEFORE INSTALLING THE PISTONS IN A NEWLY HONED CAST IRON BLOCK,
YOU SHOULD CLEAN THE BORES WITH: - ANS -A. A RAG SOAKED IN
GASOLINE.
B. A DRY, LINT-FREE RAG. (NOT CORRECT AWNSER)
C. A RAG SOAKED IN LACQUER THINNER.
D. SOAP AND WARM WATER. (CORRECT AWNSER)

CRANKSHAFT ENDPLAY CAN BE CHECKED WITH: - ANS -A. AN OUTSIDE
MICROMETER.
B. A DIAL INDICATOR. (CORRECT AWNSER)
C. AN INSIDE MICROMETER.
D. A THRUST GAUGE. (NOT CORRECT AWNSER)

CYLINDER DIAMETER IS IMPORTANT WHEN DETERMINING RING END GAP. AS
A RULE OF THUMB, A 3 INCH BORE WOULD REQUIRE A RING END GAP OF
APPROXIMATELY: - ANS -A. .0003"-.0004". (NOT CORRECT AWNSER)
B. .040"-.050".
C. .009"-.012" (CORRECT AWNSER)
D. .001"-.003"

DURING A MANIFOLD VACUUM TEST, THE VACUUM GAUGE NEEDLE
REGISTERS A STEADY 12 INCHES AT IDLE. WHICH ONE OF THE FOLLOWING
WOULD CAUSE THIS? - ANS -A. A FOULED PLUG.
B. A LEAKY VALVE. (NOT CORRECT AWNSER)
C. LATE TIMING. (CORRECT AWNSER)
D. THE AIR FUEL MIXTURE IS TOO RICH.

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