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4 Stroke Engines

Total questions: 20

Worksheet time: 15mins

Name
Class
Date
1.

What energy do 4 stroke engines convert to mechanical energy?

a)

stored

b)

kinetic

c)

chemical

d)

gasoline

2.

Fuel is mixed with air in the what?

a)

piston

b)

carburetor

c)

fuel tank

d)

camshaft

3.

Ignition of the air/fuel mixture is provided by what?

a)

spark plug

b)

valve

c)

compression ring

d)

crankshaft

4.

Abnormal combustion may be caused by all of the following except?

a)

pre-ignition

b)

engine overload

c)

detonation

d)

pressure

5.

A completely blocked what will stop the engine?

a)

fuel/air filter

b)

spark plug

c)

carburetor

d)

none of these

6.

What is a systematic approach to solving problems dealing with engine performance?

a)

systematic check

b)

troubleshooting

c)

ignition system inspection

d)

spark plug evaluation

7.

Engine vibration may be due to all of the following except?

a)

bent crankshaft

b)

muffler

c)

gear case issues

d)

bent drive shaft

8.

Less than 700 degrees fahrenheit will cause a buildup of what which will short or foul the spark plug and eventually stop the engine?

a)

nitrogen

b)

gasoline

c)

iodine

d)

carbon

9.

Around 1500 degrees fahrenheit the spark plug what will begin to glow?

a)

spark plug

b)

carburetor

c)

venter electrode

d)

gasoline

10.

It is not recommended to wash or clean foam filters in what?

a)

water

b)

gasoline

c)

oil

d)

soap

11.

No person should ever bypass what required adjustment restrictors?

a)

EPA

b)

CDA

c)

KFG

d)

COH

12.

Tiny what particles are likely to adhere to the components and cause malfunctions?

a)

dirt

b)

water

c)

oil

d)

lint

13.

When the engine is started the following season, it will smoke for a period of time until all the excess what is removed?

a)

dirt

b)

gasoline

c)

oil

d)

water

14.

Compression tests are useful in checking for a difference of cylinder what in multi-cylinder engines?

a)

pressure

b)

conditions

c)

temperature

d)

none of these

15.

PSI rating should not differ by more than what percent?

a)

15

b)

20

c)

5

d)

10

16.

What begins with removing all shrouds and shields from the muffler and stacks?

a)

fuel system inspection

b)

cylinder leakage test

c)

exhaust inspection

d)

compression test

17.

Energy contained in gasoline is turned into what power?

a)

rotating

b)

potential

c)

kinetic

d)

chemical

18.

When an engine exceeds its maximum capacity it is known as what?

a)

engine detonation

b)

engine overload

c)

engine combustion

d)

none of these

19.

What are the up-down movements of the piston?

a)

piston movement

b)

intake

c)

compression

d)

strokes

20.

The correct mixture of fuel and air will combust with what combustion?

a)

high

b)

maximum

c)

minimum

d)

low