Deck 23: Lubrication System Operation and Diagnosis

Question 1

Normal oil pump pressure in an engine is ________ PSI.

A)3-7
B)150-200
C)10-60
D)100-120

Answer 1

10-60

Question 2

Two technicians are discussing oil pumps. Technician A says that many oil pumps are driven directly off the front of the crankshaft. Technician B says that some are driven from the distributor if the engine uses a distributor-type ignition system. Which technician is correct?

A)Technician A only
B)Technician B only
C)Both technicians A and B
D)Neither technician A nor B

Answer 2

Both technicians A and B

Question 3

A typical oil pump can pump how many gallons per minute?

A)10 to 60 gallons
B)3 to 6 gallons
C)50 to 100 gallons
D)6 to 10 gallons

Answer 3

3 to 6 gallons

Question 4

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?

A)Main bearings
B)Oil filter
C)Valve train components
D)Rod bearings

Question 5

Hydrodynamic lubrication, created by the wedging action of oil between the crankshaft journal and bearing, can be as high as ________ PSI.

A)60
B)500
C)1000
D)120

Question 6

What type of oil pump is driven by the crankshaft?

A)Internal/external gear
B)Gerotor
C)External gear
D)Both A and B

Question 7

Lower than specified oil pressure is measured on a high mileage engine. Technician A says that worn main or rod bearings could be the cause. Technician B says that a clogged oil pump pickup screen could be the cause. Which technician is correct?

A)Technician A only
B)Technician B only
C)Both technicians A and B
D)Neither technician A nor B

Question 8

Engine oil passages in an engine block are called ________.

A)Holes
B)Pathways
C)Runners
D)Galleries

Question 9

A dry sump system is used in some high-performance vehicles because ________.

A)It allows for a greater oil capacity so that oil temperatures can be controlled
B)It allows the engine to develop more power
C)It allows the vehicle to corner or brake for long periods of time
D)All of the above

Question 10

An engine oil cooler usually uses ________ to cool the oil.

A)Air conditioning evaporator output
B)Coolant
C)Automatic transmission fluid after it flows through the radiator
D)Air

Question 11

Technician A says that oil pressure is normally higher when the engine is cold. Technician B says that normal engine oil pump pressure ranges from 20 to 80 psi (200 to 400 kPa) or 20 psi for every 1000 engine RPM. Who is right?

A)Technician A only
B)Technician B only
C)Both technicians A and B
D)Neither technician A nor B

Question 12

Technician A says that the lubricating system forms a seal between the piston rings and cylinder walls.Technician B says the lubricating system helps cool engine parts. Who is right?

A)Technician A only
B)Technician B only
C)Both technicians A and B
D)Neither technician A nor B

Question 13

The oil pressure relief valve controls ________ oil pressure in the lubrication system.

A)Nominal
B)Minimum
C)Average
D)Maximum

Question 14

Some vehicles use an oil cooler the help maintain proper oil temperature. Oil temperature range should be ________.

A)Above 300° F
B)212° F to 300° F
C)100° F to 150° F
D)100° F to 125° F

Question 15

The oil drains back to the oil pan through ________.

A)Drainback holes
B)The pushrods
C)The camshaft
D)Drain pumps

Question 16

The oil pressure relief valve is located on the outlet of the oil filter.

Question 17

Oil leaving the oil filter is delivered to the oil passages.

Question 18

In a dry sump system there is no oil at all in the oil pan.

Question 19

Oil consumption of about 1 quart every 700 miles is normal for a motor vehicle.

Question 20

What type of oil pump is pictured here?

A)External gear
B)Rotor type
C)Helical gear
D)Gerotor

Question 21

What type of oil pump is this?

A)A vane pump driven by the crankshaft
B)A gerotor pump driven by the camshaft
C)A gerotor pump driven by the crankshaft
D)A rotary pump driven by the camshaft