Carb vs Fuel Injection

What has replaced the carburetor in most modern engines?

• Throttle valve

• Air filter

• Fuel injector

• Fuel pump

When we hit the gas, what are we actually doing?

• Opening the throttle valve to allow more air

• Injecting gas directly into the chamber

• Adding more fuel

• Increasing the engine's temperature

What is the ideal fuel to air ratio mentioned for a complete burn?

• One part fuel to 10 parts air

• One part fuel to 13 parts air

• One part fuel to 12.5 parts air

• One part fuel to 12 parts air

What is the main advantage of electronic fuel injection over carburetors?

• It's purely mechanical

• It allows for real-time tailored fueling

• It's simpler to understand

• It requires manual adjustments

Why do motorcycles not use direct injection?

• Because it's too expensive

• Because it's less efficient

• Because it's too complex

• Because they rev too fast

What year did Congress amend the Clean Air Act, encouraging the use of ethanol in gasoline?

• 2000

• 1995

• 1990

• 1985

What is a major problem with ethanol gas in carburetors?

• It separates into a gummy goo

• It vaporizes too quickly

• It increases fuel efficiency

• It's too expensive

What is the main reason fuel injectors are considered the future over carburetors?

• They are cheaper to produce

• They are easier to clean

• They allow for future fuel compatibility

• They are purely mechanical