Tech A says that high octane fuel is harder to ignite than lower octane. Tech B says that using high octane fuel in an engine designed for lower octane will produce better fuel economy and power. Who is correct?

Select one:

The most important job of the fuel system is to optimize engine performance while:

Select one:

Which of these fuel characteristics helps to prevent the air fuel mixture from spontaneously igniting in the combustion chamber?

Select one:

The sock typically consists of a ______, which prevents most small particles from being drawn into the fuel pump and sent through the rest of the fuel system.

Select one:

The ______ is a pipe that extends above the fuel tank.

Select one:

A return line is always provided to allow excess fuel to return to the tank.

Select one:

The ________ design uses a one-way valve to hold pressure in the system while the pressure tester is connected and disconnected to the fuel rail.

Select one:

The vacuum created in a mechanically sound gasoline engine at sea level is between _______ of mercury.

Select one:

A throttle ______ controls air flow through the venturi and is linked to the throttle ______.

Select one:

What is the purpose of the venturi?

Select one:

The carburetor does all of the following EXCEPT:

Select one:

A fuel pump can be tested using a lab scope and a low-amp clamp to:

Select one:

Tech A says that most electric fuel pumps are now mounted inside of the fuel tank. Tech B says that fuel flows through the center of the electric pump and is used to cool the pump. Who is correct?

Select one:

Tech A says that fuel can be tested for alcohol content by adding water to the fuel in a test tube. Tech B says that fuel can be tested for water content by adding alcohol to the fuel in a test tube. Who is correct?

Select one:

After replacing an external fuel filter, check it for leaks by:

Select one:

The purpose of a(n) ______ is to provide the ideal air/fuel mixture for the operating conditions of the engine.

Select one:

Tech A says that the more oxygen the engine uses means the engine is running a rich mixture. Tech B says that the less oxygen the engine uses means the engine is running a lean mixture. Who is correct?

Select one:

Which of these terms is used to describe when fuel vaporizes in the fuel pump and the flow of fuel to the engine is blocked?

Select one:

Types of fuel line connections include all of these EXCEPT:

Select one:

Because fuel _______ as temperature _______, fuel tanks are vented to let them breathe.

Select one:

________ employ electronically controlled injectors to spray the fuel into either the intake manifold or the directly into the cylinder.

Select one:

What is this part?

This parts has a specific air gap?