Exam Review

4. A water pump is a positive displacement-type pump. (91) a. True b. False

b. flase

7. Which statement is true about thermostats? (page79) a. The temperature marked on the thermostat is the temperature at which the thermostat should be fully open. b. Thermostats often cause overheating. c. The temperature marked on the thermostat is the temperature at which the thermostat should start to open. d. Both a and b. *a.b.c.d. answer

a.

1. Typical piston-to-cylinder clearance is _____. (499) a. 0.001 to 0.003 inch b. 0.010 to 0.023 inch c. 0.100 to 0.150 inch d. 0.180 to 0.230 inch

a. 0.001 to 0.003 inch

4. The gasket surface of a cylinder head, as measured with a straightedge, should have a maximum variation of_____. (309) a. 0.002 inch in any 6-inch length or 0.004-inch overall b. 0.001 inch in any 6-inch length or 0.004-inch overall c. 0.020 inch in any 10-inch length or 0.020-inch overall d. 0.004 inch in any 10-inch length or 0.008-inch overall

a. 0.002 inch in any 6-inch length or 0.004-inch overall

8. A typical oil pump can pump how many gallons per minute? (115) a. 3 to 6 gallons b. 6 to 10 gallons c. 10 to 60 gallons d. 50 to 100 gallons

a. 3 to 6 gallons

6. Most vehicle manufacturers recommend repairing integral guides using _____. (313) a. OS stem valves b. Knurling c. Replacement valve guides d. Valve guide inserts

a. OS stem valves

9. Piston ring gap should only be measured _____. (443) a. After all cylinder work has been performed b. After installing the piston in the cylinder c. After installing the rings on the piston d. Both a and c

a. after all cylinder work has been performed

3. An SAE 10W-30 engine oil is ________. (109) a. An SAE oil 10 with VI additives b. An SAE oil 20 with VI additives c. An SAE oil 30 with VI additives d. An SAE oil 30 with detergent additives

a. an ASE oil 10 with VI additives

2. Oil change intervals as specified by the vehicle manufacturer ________. (111) a. Are maximum time and mileage intervals b. Are minimum time and mileage intervals c. Only include miles driven between oil changes d. Generally only include time between oil changes

a. are maximum time and mileage intervals

6. The procedure that should be used when refilling an empty cooling system includes the following _________. (98) a. Determine capacity, then fill the cooling system halfway with antifreeze and the rest of the way with water b. Fill completely with antifreeze, but mix a 50/50 solution for the overflow bottle c. Fill the block and one-half of the radiator with 100% pure antifreeze and fill the rest of the radiator with water d. Fill the radiator with antifreeze, start the engine, drain the radiator, and refill with a 50/50 mixture of antifreeze and water *first 2 words answer

a. determine capacity

10. Cam bearings should be installed _____. (Chapter 21, 473) a. Dry b. Oiled c. With at least 0.010 inch of crush d. Both b and c

a. dry

5. Piston ring end gap can be increased by _____. (500) a. Filing the ring to make the gap larger b. Installing oversize rings c. Sleeving the cylinder d. Knurling the piston

a. filing the ring to make the gap larger

1. A forged crankshaft _____. (453) a. Has a wide parting line b. Has a thin parting line c. Has a parting line in one plane d. Has both b and c

a. has a wide parting line

5. Full-floating piston pins are retained by _____. (431) a. Lock rings b. A drilled hole with roll pin c. An interference fit between rod and piston pin d. An interference fit between piston and piston pin

a. lock rings

4. A telescopic gauge can be used to measure a cylinder bore if what other measuring device is used to measure the telescopic gauge? (279) a. Micrometer b. Feeler gauge c. Straightedge d. Dial indicator

a. micrometer

4. Torque is expressed in units of ________. (55) a. Pound-feet b. Foot-pounds c. Foot-pounds per minute d. Pound-feet per second

a. pound-feet

4. The purpose of casting steel struts into an aluminum piston is to. (427) a. Provide increased strength b. Provide increased weight at the top part of the piston where it is needed for stability c. Provide increased heat transfer from the piston head to the piston pin d. Control thermal expansion

a. provide increased strength

9. Which operation should be performed first? (308) a. Resurfacing the head b. Installing replacement guides

a. resurfacing the head

3. With dual-plane intake manifold, _____. (290-291) a. Successively firing cylinders are at different levels (sections) of the manifold b. All left-side cylinders receive air-fuel mixture from the left side of the carburetor or throttle-body injection unit c. The intake runners are all of different lengths d. The manifold uses an exhaust passage

a. successively firing cylinders are at different levels (sections) of the manifold

10. An engine has been bored 0.030-inch oversize. The cylinder heads were not machined and the stroke of the crankshaft was not changed. Technician A says that the compression ratio will be higher than before the repair. Technician B says that the compression will be lower than before the repair. Which technician is correct? (284-286) a. Technician A only b. Technician B only c. Both Technicians A and B d. Neither Technician A nor B

a. technician A only

8. Technician A says that header-type exhaust manifolds produce less back pressure than do most cast-iron exhaust manifolds. Technician B says that only cast-iron exhaust manifolds are used on production vehicles. Which technician is correct? (295-297) a. Technician A only b. Technician B only c. Both Technicians A and B d. Neither Technician A nor B

a. technician A only

10. Technician A says that a clogged PCV valve on a turbocharged engine can cause an engine to burn oil. Technician B says that a defective turbocharger wastegate can cause the engine to burn oil. Which technician is correct? (60) a. Technician A only b. Technician B only c. Both Technicians A and B d. Neither Technician A nor B

a. technician a only

8. Technician A says that the radiator should always be inspected for leaks and proper flow before installing a rebuilt engine. Technician B says that overheating during slow city driving can only be due to a defective electric cooling fan. Which technician is correct? (76) a. Technician A only b. Technician B only c. Both Technicians A and B d. Neither Technician A nor B

a. technician a only

2. As the percentage of antifreeze in the coolant increases, ________. (82) a. The freeze point decreases (up to a point) b. The boiling point decreases c. The heat transfer increases d. All of the above occurs

a. the freeze point decreases (up to a point)

1. Cylinder #1 is generally _____. (391) a. The most forward cylinder (closest to the accessory drive belt) b. The first one in the firing order c. The cylinder farthest from the principal end d. All of the above

a. the most forward cylinder (closest to the accessory drive belt)

6. The standard measurement for surface finish is the micro inch. Which of the following is correct? (400) a. The rougher the surface, the higher the micro inch finish measurement. b. The smoother the surface, the higher the micro inch finish measurement. c. The rougher the surface, the lower the micro inch finish measurement. d. Both b and c.

a. the rougher the surface, the higher the micro inch finish measurement

3. Heat transfer is improved from the coolant to the air when ___________________. (88) a. The temperature difference is great b. The temperature difference is small c. The coolant is 95% antifreeze d. Both a and c

a. the temperature difference is great

2. Many aluminum piston skirts are plated with _____. (426) a. Tin b. Lead c. Antimony d. Terneplate

a. tin

6. Which of the following cannot be measured using a feeler gauge? (281) a. Valve guide clearance b. Piston ring gap c. Piston ring side clearance d. Connecting rod side clearance

a. valve guide clearance

8. Typical journal-to-bearing clearance is _____. (470) a. 0.00015 to 0.00018 inch b. 0.0005 to 0.0025 inch c. 0.150 to 0.250 inch d. 0.020 to 0.035 inch

b. 0.0005 to 0.0025 inch

4. Typical thrust bearing clearance is _____. (497) a. 0.001 to 0.003 inch b. 0.002 to 0.012 inch c. 0.025 to 0.035 inch d. 0.050 to 0.100 inch

b. 0.002 to 0.012 inch

1. Normal oil pump pressure in an engine is ________. (106) a. 3 to 7 psi b. 10 to 60 psi c. 100 to 150 psi d. 180 to 210 psi

b. 10 to 60 psi

3. A four-cylinder engine fires one cylinder at every _____degrees of crankshaft rotation. (455) a. 270 b. 180 c. 120 d. 90

b. 180

6. A normally aspirated automobile engine loses about _______ power per 1000 feet of altitude. (58) a. 1% b. 3% c. 5% d. 6%

b. 3%

9. An eight-cylinder engine with a bore of 4.000 inches and a stroke of 3.000 inches has a displacement of _____. (282-285) a. 226 cubic inches b. 302 cubic inches c. 350 cubic inches d. 383 cubic inches

b. 302 cubic inches

1. Intake charge velocity has to be _____to prevent fuel droplet separation. (290) a. 25 feet per second b. 50 feet per second c. 100 feet per second d. 300 feet per second

b. 50 feet per second

5. Technician A says that 4-valve-per-cylinder engines breathe better than 2-valve-per-cylinder engines because they provide more valve area. Technician B says they breathe better because they provide more valve perimeter. Who is right? (304) a. A only b. B only c. Both A and B d. neither A nor B

b. B only

3. A hypereutectic piston has _____. (428) a. A higher weight than a eutectic piston b. A higher silicon content c. A higher tin content d. A higher nickel content

b. a higher silicon content

10. Piston damage is most likely to be caused by _____. (??; question will be replaced on 2nd edition) a. Valves hitting the piston head b. Abnormal combustion c. Lugging the engine during operation d. High engine speeds that can break piston heads

b. abnormal combustion

1. Connecting rod caps should be marked (if they were not marked at the factory) before the piston and connecting rod assembly is removed from the engine _____. (439) a. Because they are balanced together b. Because they are machined together c. To make certain that the heavier rod is matched to the heavier piston d. To make certain that the lighter rod is matched to the lighter piston

b. because they are machined together

7. Sleeving a cylinder means _____. (404) a. Plating the inner walls of the cylinder with a different metal, such as nickel b. Boring the cylinder to be oversize and installing a cast-iron sleeve to restore the cylinder to the original diameter c. Boring the cylinder to be 0.020- to 0.060-inch oversize to accept oversize pistons d. Using a hone to finish the cylinder after boring

b. boring the cylinder to be oversize and installing a cast-iron sleeve to restore the cylinder to the original diameter

9. After decking, boring, and honing an engine block, what other metal-removing operation should be performed? (409) a. Align honing the main bearing caps and saddles b. Chamfering the cylinder bores and bolt holes c. Broaching the timing chain cover surface d. Filing the oil pan rails flat

b. chamfering the cylinder bores and bolt holes

9. Most bolt torque specifications are for _____. (506) a. Clean threads only b. Clean and lubricated threads c. Dirty threads d. Dirty threads, but 50% can be added for clean threads

b. clean and lubricated threads

10. Bearing _____occurs when a bearing shell is slightly above the parting surface of the bearing cap. (471) a. Overlap b. Crush c. Cap lock d. Interference fit

b. crush

8. Which measuring gauge needs to be set up (adjusted) to a fixed dimension before use? (282) a. Dial indicator b. Dial bore gauge c. Vernier dial gauge d. Micrometer

b. dial bore gauge

3. The most common cause of premature bearing failure is _____. (492) a. Misassembly b. Dirt c. Lack of lubrication d. Overloading

b. dirt

5. Another name for a manifold heat system that uses a heated grid under the carburetor is _____. (291) a. Heated air inlet system b. Early fuel evaporation c. Thermo vacuum switch d. Exhaust gas recirculation valve

b. early fuel evaporation

1. All overhead valve engines ________. (52) a. Use an overhead camshaft b. Have the overhead valves in the head c. Operate by the two-stroke cycle d. Use the camshaft to close the valves

b. have the overhead valves in the head

8. What other engine component may have to be machined if the cylinder heads are machined on a V-type engine? (311) a. Exhaust manifold b. Intake manifold c. Block deck d. Distributor mount (if the vehicle is so equipped)

b. intake manifold

4. As engine oil is used in an engine ________. (109) a. It becomes thinner as a result of chemical breakdown that occurs with age b. It becomes thicker because of oxidation, wear metals, and combustion by-products c. It becomes thicker because of temperature changes d. It becomes thinner because of oxidation, wear metals, and combustion by-products

b. it becomes thicker because of oxidation, wear metals, and combustion by-products

8. How many rotations of the crankshaft are required to complete each stroke of a four-stroke cycle engine? (48) a. One-fourth b. One-half c. One d. Two

b. one-half

3. To help ensure proper engine cooling, the cylinder head design features used on most engines are _____. (305) a. Long exhaust ports and short intake ports b. Short exhaust ports and long intake ports c. Large exhaust crossover passages d. Coolant passages restricted by head gaskets

b. short exhaust ports and long intake ports

5. Technician A says that the same brand engine oil should be used throughout an engine's entire service life. Technician B says that any engine oil of the correct API and SAE rating can be used because all engine oils are compatible. Which technician is correct? (110) a. Technician A only b. Technician B only c. Both Technicians A and B d. Neither Technician A nor B

b. technician B only

7. Two technicians are discussing oil filters. Technician A says that the oil will remain perfectly clean if just the oil filter is changed regularly. Technician B says that oil filters can filter particles smaller than the human eye can see. Which technician is correct? (113) a. Technician A only b. Technician B only c. Both Technicians A and B d. Neither Technician A nor B

b. technician B only

9. A customer complains that the heater works sometimes, but sometimes only cold air comes out while driving. Technician A says that the water pump is defective. Technician B says that the cooling system could be low on coolant. Which technician is correct? (96) a. Technician A only b. Technician B only c. Both Technicians A and B d. Neither Technician A nor B

b. technician b only

10. Which statement is true about surface finish? (311) a. Cast-iron surfaces should be smoother than aluminum surfaces. b. The rougher the surface, the higher the micro inch finish measurement. c. The smoother the surface, the higher the micro inch finish measurement. d. A cylinder head should be a lot smoother than a crankshaft journal.

b. the rougher the surface, the higher the micro inch finish measurement

1. The threaded movable part that rotates on a micrometer is called the _____. (275) a. Barrel b. Thimble c. Spindle d. Anvil

b. thimble

3. The block deck is the _____. (392) a. Bottom (pan rail) of the block b. Top surface of the block c. Valley surface of a V-type engine d. Area where the engine mounts are attached to the block

b. top surface of the block

9. A rotating force is called ________. (55) a. Horsepower b. Torque c. Combustion pressure d. Eccentric movement

b. torque

5. The thrust bearing surface is located on one of the main bearings to control thrust loads caused by _____. (451) a. Lugging the engine b. Torque converter or clutch release forces c. Rapid deceleration forces d. Both a and c

b. torque converter or clutch release forces

9. Which type of system uses exhaust heat to spin a turbine that turns an impeller to force additional air into the intake manifold? (58) a. Supercharger b. Turbocharger c. Exhaust gas recirculation d. Heat riser

b. turbocharger

2. An SOHC V-8 engine has how many camshafts? (51) a. One b. Two c. Three d. Four

b. two

8. For honing a cylinder for moly piston rings, a _____-grit hone should be used. (408) a. #150 b. #180 c. #220 d. #280

c. #220

10. The minimum amount of material that is recommended to be removed from the cylinder after boring is _____. (407) a. 0.010 inch b. 0.008 inch c. 0.002 inch d. 0.001 inch

c. 0.002 inch

10. The normal operating temperature (coolant temperature) of an engine equipped with a 195*F thermostat is: (79) a. 175 to 195*F b. 185 to 205*F c. 195 to 215*F d. 175 to 215*F

c. 195 to 215*F

2. If the gauging plastic strip is wide after the bearings are tightened, this indicates _____. (495) a. A large oil clearance b. An old, dried strip of plastic gauging material c. A small oil clearance d. A small side (thrust) clearance

c. a small oil clearance

1. Hemispherical combustion chambers _____. (question will be changed in 2nd edition) a. Create a turbulent air-fuel charge b. Always use four valves per cylinder c. Are non-turbulent d. Use inline (parallel) valves

c. are non-turbulant

9. A bearing shell has a slightly larger arc than the bearing housing. This difference is called _____. (471) a. Bearing crush b. Bearing tang c. Bearing spread d. Bearing saddle

c. bearing spread

10. Technician A says that a crack in the exhaust manifold can cause a drivability problem because the air that leaks into the exhaust can give the oxygen sensor (O2S) a false reading. Technician B says that an exhaust leak can cause noise. Which technician is correct? (296) a. Technician A only b. Technician B only c. Both Technicians A and B d. Neither Technician A nor B

c. both technicians A and B

6. Technician A says that some vehicle manufacturers recommend an API grade be used in the engine. Technician B says that an oil with the specified API rating and SAE viscosity rating should be used in an engine. Which technician is correct? (110) a. Technician A only b. Technician B only c. Both Technicians A and B d. Neither Technician A nor B

c. both technicians A and B

7. Technician A says that a vacuum leak (air leak) on one cylinder of a V-type engine can affect another cylinder sharing the same intake manifold runner. Technician B says that some intake manifolds are designed to increase engine torque by providing a ram air effect. Which technician is correct? (291) a. Technician A only b. Technician B only c. Both Technicians A and B d. Neither Technician A nor B

c. both technicians A and B

6. When balancing pistons _____. (428) a. Choose the heaviest and add weight to the others b. Choose the heaviest and grind weight off until it matches the average of all the others c. Choose the lightest and grind material from the other pistons until all pistons are of equal weight d. Balance the piston only after it is assembled with the connecting rod

c. choose the lightest and grind material from the other pistons until all pistons are of equal weight

2. A typical V-8 engine crankshaft has _____main bearings. (452) a. Three b. Four c. Five d. Seven

c. five

5. Horsepower is expressed in units of ________. (56) a. Pound-feet b. Foot-pounds c. Foot-pounds per minute d. Pound-feet per second

c. foot-pounds per minute

6. The cylinder bolts should be tightened (torqued) in what general sequence? (507) a. The four outside bolts first, then from the center out b. From the outside bolts to the inside bolts c. From the inside bolts to the outside bolts d. Starting at the front of the engine and torquing bolts from front to rear

c. from the inside bolts to the outside bolts

2. A shallow skirt block _____. (392) a. Has the oil pan rail below the centerline of the crankshaft b. Has the oil pan rail above the centerline of the crankshaft c. Has the oil pan rail close to the centerline of the crankshaft d. Has a more shallow oil pan (sump) than other engine types

c. has the oil pan rail close to the centerline of the crankshaft

4. A broach is a _____. (390) a. Type of boring machine b. Type of casting technique c. Machining process that uses a large slab with a number of cutting teeth d. Type of honing machine used on production engines only

c. machining process that uses a large slab with a number of cutting teeth

4. A heated air intake system is usually necessary for proper cold engine drivability except_____. (291-292) a. On one- or two-barrel carburetor systems b. On four-barrel carburetor systems c. On port fuel-injection systems d. On throttle-body fuel-injection systems

c. on port fuel-injection systems

8. Side clearance is a measure taken between the _____and the _____. (434, 444) a. Piston (side skirt); cylinder wall b. Piston pin; piston pin retainer (clip) c. Piston ring; piston ring groove d. Compression ring; oil control ring

c. piston ring; piston ring groove

6. If any crankshaft is ground, it must also be _____. (463-464) a. Shot peened b. Chrome plated c. Polished d. Externally balanced

c. polished

5. Water pumps ________. (98, figure 5-49; compare pulley sizes) a. Only work at idle and low speeds; the pump is disengaged at higher speeds b. Use engine oil as a lubricant and coolant c. Rotate at about the same speed as the engine d. Disengage during freezing weather to prevent radiator failure

c. rotate at about the same speed as the engine

3. To check a crankshaft journal for out-of-round, the journal should be measured in at least how many locations? (275-279) a. Two b. Four c. Six d. Eight

c. six

5. To directly measure the diameter of a valve guide in a cylinder head, use a micrometer and a _____. (280) a. Telescopic gauge b. Feeler gauge c. Small-hole gauge d. Dial indicator

c. small-hole guage

3. Brake horsepower is calculated by which of the following? (56) a. Torque times RPM b. 2 times stroke c. Torque times RPM divided by 5252 d. Stroke times bore times 3300

c. torque times rpm divided by 5252

9. In typical engine lubrication systems, what components are the last to receive oil and the first to suffer from a lack of oil or oil pressure? (117) a. Main bearings b. Rod bearings c. Valve trains d. Oil filters

c. valve trains

7. Typical valve stem-to-valve guide clearance is _____. (312) a. 0.030 to 0.045 inch (0.8 to 0.10 millimeter) b. 0.015 to 0.020 inch (0.4 to 0.5 millimeter) c. 0.005 to 0.010 inch (0.13 to 0.25 millimeter) d. 0.001 to 0.004 inch (0.03 to 0.05 millimeter) *inch only answer

d. 0.001 to 0.004 inch

7. One cylinder of an automotive four-stroke cycle engine completes a cycle every ________. (48) a. 90 b. 180 c. 360 d. 720

d. 720

5. Which engine block machining process should be done first when reconditioning? (396) a. Cylinder boring b. Decking the block c. Honing the cylinders d. Align boring (honing)

d. align boring (honing)

8. Turning the oil pump before starting the engine should be done_____. (517) a. To lubricate engine bearings b. To lubricate valve train components c. To supply oil to the camshaft d. All of the above

d. all of the above

7. A misaligned connecting rod causes what type of engine wear? (441) a. Cylinder taper b. Barrel-shaped cylinders c. Ridge wear d. Angle wear on the piston skirt

d. angle wear on the piston skirt

2. The intake manifold of a port fuel-injected engine _____. (292)a. Uses a dual heat riser b. Contains a leaner air-fuel mixture than does the intake manifold of a carburetor system c. Contains only fuel (gasoline) d. Contains only air

d. contains only air

1. Permanent antifreeze is mostly ________. (82) a. Methanol b. Glycerin c. Kerosene d. Ethylene glycol

d. ethylene glycol

7. If bearing-to-journal clearance is doubled, how much oil will flow? (470) a. One-half as much b. The same amount if the pressure is kept constant c. Double the amount d. Four times the amount

d. four times the amount

4. A splayed crankshaft is a crankshaft that _____. (456) a. Is externally balanced b. Is internally balanced c. Has offset main bearing journals d. Has offset rod journals

d. has offset rod journals

2. For lowest hydrocarbon emissions, the engine design feature used is _____. (302-303) a. Low combustion chamber surface-area-to-volume ratio b. High combustion chamber surface-area-to-volume ratio c. Non-centrally mounted spark plug d. Increased (as much as possible) quench area

d. increased (as much as possible) quench area

6. Technician A says that the EGR system helps to control nitrous oxide (N2O). Technician B says that all engines use an EGR valve to lower combustion temperatures. Who is correct? (293) a. Technician A only b. Technician B only c. Both Technicians A and B d. Neither Technician A nor B

d. neither technician A nor B

2. To check a crankshaft journal for taper, the journal should be measured in at least how many locations? (275, 279) a. One b. Two c. Four d. Six

d. six

7. Which of the following cannot be measured using a straightedge and a feeler gauge? (281) a. Cylinder head flatness b. Block deck flatness c. Straightness of the main bearing bores d. Straightness of the cylinder bore

d. straightness of the cylinder bore

7. The torque-angle method involves _____. (508) a. Turning all bolts the same number of turns b. Torquing to specifications and loosening by a specified number of degrees c. Torquing to one-half specifications, then to three-quarter torque, then to full torque d. Turning bolts a specified number of degrees after initial torque

d. turning bolts a specified number of degrees after initial torque