Chapter 41 ASE Style Questions Fuel Service

When a fuel injected engine is shut off

A. no fuel pressure remains in the supply line to the fuel injectors.

B. the fuel supply line remains pressurized.

C. both A and B

D. Neither A nor B

B. the fuel supply line remains pressurized

which of the following can result from an intake manifold air leak (vacuum leak)

A. a rough idle

B. a higher idle speed

C. a flat spot on acceleration

D. All of the above

D. All the above

Which of the following is a possible location for a fuel filter A. In the fuel line to the fuel injectors

B. In the fuel tank

C. In a carburetor inlet

D. all the above

D. All the above

Remove a flared connection using a

A. a box wrench

B. vise grips

C. a flare-nut wrench

D. an adjustable end wrench

C. A flare-nut wrench

A fuel pressure gauge can be installed at the schrader valve on

A. throttle-body injection

B. looped port injection

C. Both A and B

D. Neither A nor B

B. Looped port injection

Burned spark plugs can result from operating with a fuel system that is

A. too rich

B. too lean

C. Either A or B

D. neither A nor B

B. too lean

which test is the best indicator of a fuel pump problem

A. pressure test

B. volume test

C. compression test

D. Aspiration test

A. pressure test

The throttle plate can be held open by carbon and gum deposits on

A. throttle body injected engines

B. port injection engines

C. Both A and B

D. neither A nor B

C. Both A and B

Technician A says that to start a fuel-injected car, the accelerator should be depressed once. Technician B says that to start a car with a carburetor, do not touch the accelerator pedal until the engine is running. Who is right? Technician A

Technician B

Both A and B

Neither A nor B

Technician A

A computer feedback fuel system has poor driveability when cold. Technician A says that this could be due to a bad oxygen sensor. Technician B says to check for external causes such as an intake manifold leak or incorrect fuel system pressure. Who is right?

Technician A

Technician B

Both A and B

Neither A nor B

Both A and B