Exam 29: Fuel Delivery Systems

The fuel strainer is sometimes referred to as a ____________________.

On modern vehicles, the fuel pump is shut off when the air bag is deployed.

If a vehicle is to be stored for several months, a fuel ____________________ should be added to the gasoline in the fuel tank.

Where in the fuel system is a fuel filter usually found?

An in-tank electric pump is usually the ____________________ type.

How can an electric fuel pump be safe when there is a great potential for sparks between an electric motor's armature and brushes?

What controls [turns on and off] the fuel pump on most late-model vehicles?

A no start/no fuel pressure condition is being diagnosed. When a test light is connected to the pump positive terminal, there is no voltage when the engine is cranked by the starter. What could cause this problem?

How can you tell whether the fuel pump runs when the ignition switch is turned on?

A fuel system that runs at 35 to 50 psi should draw around _____ amps of current.

Fuel tanks may be constructed of all the following EXCEPT:

Gas cap testing is being discussed. Technician A says the tester applies twenty inches of vacuum to the cap and measures its rate of leakage. Technician B says if the wrong adapter was used, the cap will fail the test even if it is good. Who is correct?

Which of the following problems could NOT cause the fuel pressure to drops off quickly after the engine and ignition are turned off.

OBDII evaporative system integrity testing is being discussed. Technician A says the integrity check is done by creating a vacuum in the tank and measuring how well it holds the vacuum. Technician B says the fuel tank pressure (FTP) sensor is a transducer that converts the absolute pressure in the fuel tank into an input for the PCM. Who is correct?

Technician A connects a fuel pressure gauge to the Schrader valve on the fuel rail. Technician B connects the gauge to the fuel lines by inserting a tee adapter between the fuel filter and the fuel rail. Who is correct?

Technician A says the inertia switch has a reset button that must be depressed for at least one second before the pump will operate again. Technician B says the inertia switch is triggered by the ABS control module. Who is correct?

All fuel tank fittings are the threaded type.

If twenty inches of vacuum is applied to the fuel pressure regulator while the fuel pump is running, the fuel pressure should _____.

What class of fire extinguisher should be used on gasoline fires?

Fuel line fittings are being discussed. Technician A says that O-rings are used on some fuel line fittings. Technician B says that clamps are used on some systems. Who is correct?