ICE

Question 1

What are the four main parts of a 1 cylinder engine

Answer 1

Cylinder
Piston
Crankshaft
Connecting rod

Question 2

What parts of the engine change reciprocating energy to rotary motion

Answer 2

Connecting rod and crank shaft

Question 3

What is top dead center

Answer 3

The instant that motion changes from up to down

Question 4

What happens during the intake stroke

Answer 4

Piston moves downward and intake valve opens

Question 5

When does the compression stroke begin

Answer 5

When piston is at BDC with both valves closed

Question 6

When does the power stroke begin

Answer 6

When the piston is at TDC and spark is introduced

Question 7

What PSI is diesel compression normally

Answer 7

500PSI

Question 8

What angles do V-type engines usually come in

Answer 8

45, 50, 55, 60, and 90

Question 9

What pressure do gas direction injectors operate at

Answer 9

Up to 30,000 PSI

Question 10

What are the 6 types of fuel injection systems

Answer 10

Individual pump
Multi plunger
Unit injector
Pressure time injector
Distributor pump
Common rail

Question 11

What is the job of a fuel injector

Answer 11

-Pressurizes
-Meters
-Times
-Atomizes
For a single cylinder

Question 12

What ways are cam shafts connected to the crank shaft

Answer 12

-belt
-Chain
-Gear

Question 13

How are water pumps driven

Answer 13

Normally by belt, but can be gear driven

Question 14

Which radiator hose is the return hose

Answer 14

Upper hose

Question 15

What connects the radiator to the engine

Answer 15

The thermostat

Question 16

What radiator hose goes to the engine

Answer 16

Bottom hose

Question 17

What does the bottom radiator hose connect together

Answer 17

Radiator to the water pump

Question 18

What are the two types of engine cooling fans

Answer 18

Engine powered
Electric

Question 19

What unit is used to grade gasoline

Answer 19

Octane

Question 20

What is octane

Answer 20

The ability to resist knock or ping

Question 21

What unit is used to grade diesel fuel

Answer 21

Cetane

Question 22

What does cetane measure

Answer 22

Cold start ability

Question 23

What is the original formula for horse power

Answer 23

A horse can lift 330lbs 100ft in 1 minute

Question 24

what is frictional horse power

Answer 24

The power needed to over come engine friction

Question 25

How is cylinder size determined

Answer 25

By bore diameter and stroke

Question 26

What is the formula for piston displacement

Answer 26

Displacement=3.14 x radius squared x stroke

Question 27

Compression ratio formula is

Answer 27

BDC volume : TDC volume

Question 28

What is the normal range of diesel compression ratios

Answer 28

17:1- 25:1

Question 29

How many piston rings are generally used in a diesel engine

Answer 29

4

Question 30

On a 4 stroke engine at what speed does the cam turn

Answer 30

1/2 of crank speed

Question 31

What angles are valve seats usually cut

Answer 31

30- 45 degrees

Question 32

How big are cam shaft gears

Answer 32

Double the size of the crank shaft gear

Question 33

What is the typical clearance for an intake valve

Answer 33

.014”

Question 34

What is the typical clearance for an exhaust valve

Answer 34

.016”

Question 35

What conditions can a compression test be used to troubleshoot

Answer 35

Engine misfire Rough idle Puffing noise

Question 36

What can cause low compression

Answer 36

Blown head gasket Engine damage Burnt valves Valve train adjustment Bad timing

Question 37

How much oil is used in a wet compression test

Answer 37

1 table spoon of 30w in the cylinder

Question 38

What is does it mean if compression increases during a wet compression test

Answer 38

Worn piston rings or bad cylinder

Question 39

What is does it mean if compression stays the same (low) during a wet compression test

Answer 39

Valve or head gasket issue

Question 40

What effect does elevation have on vacuum

Answer 40

For every 1,000 feet gained pressure increases 1 inch

Question 41

What does 1 horse power equal

Answer 41

1hp= 33,000 ft/lb in 1 minute

Question 42

What is brake horse power BHP

Answer 42

The power measured at the fly wheel

Question 43

What causes excessive oil consumption

Answer 43

External leakage Burning in the combustion chamber

Question 44

What cause low oil pressure

Answer 44

Restricted oil filter Contaminated fuel Crank shaft bearing clearance Cam and rocker bearing clearance Pump relief valve stuck open Broken down oil