Engine Diagnosis Quiz 2/12

Engine Diagnosis Quiz 2/12

12th Grade

15 Qs

quiz-placeholder

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Engine Diagnosis Quiz 2/12

Engine Diagnosis Quiz 2/12

Assessment

Quiz

Other

12th Grade

Medium

Used 1+ times

FREE Resource

15 questions

Show all answers

1.

MULTIPLE CHOICE QUESTION

1 min • 5 pts

Is gas at the spark plug?

Flooded

Dry

Answer explanation

If gas is at the spark plug, it indicates that the engine is flooded. A flooded engine occurs when too much fuel enters the combustion chamber, preventing proper ignition. Therefore, the correct answer is 'Flooded'.

2.

MULTIPLE CHOICE QUESTION

1 min • 5 pts

Is there spark? Is the gap correct? 0.25-0.030?

The question has a diagram associated with it. The diagram has been stored separately.

No, the gap is incorrect.

Yes, the gap is correct.

There is no spark.

Answer explanation

The question references a diagram that is crucial for determining the correctness of the gap. Without the diagram, we cannot definitively assess the gap or the presence of a spark.

3.

MULTIPLE CHOICE QUESTION

1 min • 5 pts

Compression is ... ? On compression stroke (4 or 2 Stroke, Diesel) Piston travels up Valves closed/sealed Piston/rings/cylinder/gasket are sealed Need to be timed properly

Piston travels down

Valves open

Piston travels up

Piston/rings/cylinder/gasket are not sealed

Answer explanation

During the compression stroke, the piston travels up while the valves remain closed. This ensures that the piston, rings, cylinder, and gasket are sealed, allowing for effective compression in the engine.

4.

MULTIPLE CHOICE QUESTION

1 min • 5 pts

What is one possible cause of compression loss due to worn or damaged valves?

Loose head bolts

Push rod/tappet

Blown head gasket

Timing off

Answer explanation

Worn or damaged valves can lead to compression loss, and issues with the push rod or tappet can affect valve operation, causing improper sealing. This makes 'Push rod/tappet' a valid cause of compression loss.

5.

MULTIPLE CHOICE QUESTION

1 min • 5 pts

Which of the following can lead to compression loss due to loose components?

Loose head bolts/spark plug

Damaged piston/rings/cylinder

Blown head gasket

Timing off

Answer explanation

Loose head bolts or spark plugs can cause a loss of compression as they may not maintain proper sealing, leading to leaks. This directly affects engine performance, making this the correct choice.

6.

MULTIPLE CHOICE QUESTION

1 min • 5 pts

A 'Worn valve' has what impact on compression loss in the valve train?

No impact

Increases compression loss

Decreases compression loss

Improves valve efficiency

Answer explanation

A worn valve can lead to improper sealing, allowing air to escape during the compression stroke. This results in increased compression loss, making 'Increases compression loss' the correct choice.

7.

MULTIPLE CHOICE QUESTION

1 min • 5 pts

How can 'bent, broken' components affect compression loss in the valve train?

They can cause increased compression loss.

They have no effect on compression loss.

They improve compression efficiency.

They only affect the exhaust system.

Answer explanation

Bent or broken components in the valve train can disrupt the sealing surfaces, leading to increased gaps. This results in a loss of compression, making the correct choice 'They can cause increased compression loss.'

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