auto tech

Flashcard 1
Q: What are the four elements needed for combustion?
A: Air, fuel, compression, and heat (spark).

Flashcard 2
Q: What is the purpose of the ignition system on the engine?
A: To provide the spark to burn the air and fuel mixture.

Flashcard 3
Q: What is the correct gear ratio from crankshaft to camshaft?
A: 2 to 1

Flashcard 4
Q: What does a wet compression test indicate?
A: The condition of the piston rings.

Flashcard 5
Q: How is one thousandth of an inch written in decimal form?
A: 0.001

Flashcard 6
Q: Name the basic valve train components.
A: Valve tappet (lifter), rocker arm, camshaft, valve spring.

Flashcard 7
Q: Five quarts of oil and an oil filter cost $20.35. With a $4.43 coupon, what is the final cost?
A: $15.92

Flashcard 8
Q: How can you identify an oil control ring?
A: It has holes or grooves in it.

Flashcard 9
Q: If a spark plug has an air gap of .044" and specifications call for .035", how much must the gap be reduced?
A: 0.009"

Flashcard 10
Q: How is the diameter of a bolt measured?
A: Across the outside of the threads.

Flashcard 11
Q: What tool should be used to tighten engine head bolts?
A: A torque wrench.

Flashcard 12
Q: Do two-stroke cycle engines have valves?
A: No, they do not have valves.

Flashcard 13
Q: Which type of wrench is least likely to round off the corners of a nut or bolt?
A: A box end wrench.

Flashcard 14
Q: Which engine components can be repaired, replaced, or reconditioned?
A: Be prepared to identify these components.

Flashcard 15
Q: What type of valve does a 2-stroke engine use?
A: A reed valve.

Flashcard 16
Q: What is Plastigage used for?
A: To check bearing oil clearance.

Flashcard 17
Q: If an engine is not producing spark, what component is most likely faulty?
A: The coil (magneto).

Flashcard 18
Q: When are safety glasses required in the shop?
A: At ALL times.

Flashcard 19
Q: Place the following wrench sizes in order from largest to smallest: ½, ¾, 7/16, 9/16
A: ¾, ½, 9/16, 7/16

Flashcard 20
Q: Name the basic engine components.
A: Block, crankshaft, valve, piston, cylinder head, connecting rod.

Flashcard 21
Q: What is the purpose of the cylinder head?
A: To complete the combustion chamber.

Flashcard 22
Q: Name the three journals of a small engine crankshaft.
A: Power Take Off, Connecting rod, Magneto.

Flashcard 23
Q: Label each stroke in the four-stroke cycle.
A: Be prepared to label intake, compression, power, and exhaust strokes.

Flashcard 24
Q: What poisonous gas is produced by gasoline engines?
A: Carbon monoxide.

Flashcard 25
Q: What is the most likely result of a clogged air filter?
A: A fouled spark plug.

Flashcard 26
Q: When should gasoline be added to a small engine fuel tank?
A: When the engine is cold.

Flashcard 27
Q: Name the most likely cause of blue exhaust smoke.
A: Worn piston rings.

Flashcard 28
Q: Showing up for work late on a consistent basis represents a lack of what kind of skill?
A: Time management.

Flashcard 29
Q: At work, completing a service job within the specified time allotment is an example of what?
A: Staying on task.

Flashcard 30
Q: What is a likely cause of low engine compression?
A: A bad head gasket.

Flashcard 31
Q: What is the result of overfilling the crankcase with oil?
A: Blue exhaust smoke.

Flashcard 32
Q: Which component is part of the ignition system?
A: Spark plug.

Flashcard 33
Q: What will result in excessive black engine exhaust?
A: A rich air-fuel mixture.

Flashcard 34
Q: What tool is used to measure magneto air gap?
A: Feeler gauges.

Flashcard 35
Q: What component drives the tappets/lifters?
A: Camshaft.

Flashcard 36
Q: What type of fuel mixture is used in two-cycle engines?
A: A fuel and oil mixture (commonly 40:1).

Flashcard 37
Q: At what position is valve timing set?
A: Top Dead Center (TDC).

Flashcard 38
Q: On an air-cooled engine, what removes heat away from the engine?
A: Fins.

Flashcard 39
Q: What is the final step when reassembling an engine head?
A: Torque the engine head bolts.

Flashcard 40
Q: What is a correct customer service practice?
A: Returning the customer’s equipment clean.