Troubleshooting Small Engine Fuel Issues

What is the primary function of the carburetor in a small engine's fuel system?

• To ignite the fuel-air mixture

• To mix air with fuel in the correct ratio

• To store fuel

• To filter air

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DOK Level 2: Skill/Concept

Which component is responsible for delivering fuel from the tank to the carburetor in a small engine?

• Fuel filter

• Fuel pump

• Spark plug

• Air filter

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DOK Level 2: Skill/Concept

If a small engine is hard to start and runs rough, which fuel system issue might be the cause?

• Clogged air filter

• Dirty carburetor

• Faulty spark plug

• Low oil level

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DOK Level 2: Skill/Concept

What is the purpose of the fuel filter in a small engine's fuel system?

• To increase fuel pressure

• To remove impurities from the fuel

• To cool the engine

• To adjust the fuel-air mixture

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DOK Level 2: Skill/Concept

Which of the following symptoms indicates a possible fuel system issue in a small engine?

• Engine overheating

• Engine backfiring

• Engine running smoothly

• Engine oil leakage

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DOK Level 2: Skill/Concept

How can a clogged fuel line affect the performance of a small engine?

• It can cause the engine to run too fast

• It can prevent the engine from starting

• It can increase fuel efficiency

• It can improve engine power

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DOK Level 2: Skill/Concept

What is a common cause of fuel contamination in small engines?

• Using high-octane fuel

• Storing fuel for long periods

• Regular maintenance

• Using synthetic oil

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Which maintenance task can help prevent fuel system issues in small engines?

• Changing the oil regularly

• Cleaning the air filter

• Replacing the fuel filter

• Adjusting the throttle

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DOK Level 2: Skill/Concept

What might be the result of using old or stale fuel in a small engine?

• Increased engine power

• Improved fuel efficiency

• Engine misfiring

• Reduced engine noise

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DOK Level 2: Skill/Concept

Which of the following is a sign that the carburetor may need cleaning?

• Smooth acceleration

• Engine stalling

• High fuel efficiency

• Quiet operation

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DOK Level 2: Skill/Concept