Question 1

The ORVR system is designed to make refueling faster.

Accepted Answer

The ORVR (Onboard Refueling Vapor Recovery) system is designed to capture fuel vapors during refueling and prevent them from escaping into the atmosphere, not to make the refueling process faster.

Question 2

A small amount of gasoline in the regulator vacuum hose is normal on older vehicles.

Accepted Answer

Gasoline in the regulator vacuum hose indicates a malfunctioning fuel pressure regulator, not a normal condition, regardless of the vehicle's age.

Question 3

On a General Motors vehicle, how long will the fuel pump run if the ignition is turned on but the engine is not started?&#10;A)Between 10 and 20 minutes, depending on the vehicle&#10;B)500 ms&#10;C)One to two seconds&#10;D)Until the ignition is turned off

Accepted Answer

The fuel pump on a General Motors vehicle will run for one to two seconds if the ignition is turned on but the engine is not started. This is a standard procedure to prime the engine with fuel and build up necessary pressure in the fuel system before starting.

Question 4

How much fuel should be supplied to the engine every 30 seconds?&#10;A)2 Liters&#10;B)1 Pint&#10;C)4 Pints&#10;D)2 Pints

Accepted Answer

2 pints is equivalent to 1 quart, which is approximately 0.946 liters. Therefore, supplying 2 pints every 30 seconds is closest to the commonly recommended fuel supply rate for many engines, balancing efficiency and power, without the exact engine specifications provided.

Question 5

Which is NOT a commonly used type of fuel pump design?&#10;A)Pulsating&#10;B)Gerotor&#10;C)Roller cell&#10;D)Turbine

Accepted Answer

Pulsating fuel pumps are not a commonly used design in automotive applications. The other options, Gerotor, Roller cell, and Turbine, are all established types of fuel pumps used in various vehicles.

Question 6

A good fuel pump should supply how much fuel per minute?&#10;A)0.5 to 1 gallons&#10;B)1 pint&#10;C)0.5 pint&#10;D)0.25 pint

Accepted Answer

A good fuel pump should supply about 0.5 to 1 gallons of fuel per minute to ensure the engine receives enough fuel for combustion at various speeds and loads.

Deck 77: Fuel Pumps, Lines, and Filters