Low-pressure fuel systems include features to inform the operator of _________________.

All of the following are functions of the low-pressure fuel system, EXCEPT __________.

Fuel system gear pumps are of the __________ design.

Where are mechanical vane-type pumps usually located?

A fuel return check valve __________.

Pressure of fuel delivery out of a positive displacement pump increases as __________

Technician A says that restriction occurs across the fuel filter when it begins to load with contaminants. Technician B says that filtercontamination can be check by connecting a vacuum gauge with a T-fitting or service port between the transfer pump and primary filter.Who is correct?

Which is the recommended tool when performing primary fuel system inspection?

Technician A says that any air in the fuel system will prevent the fuel from properly pressurizing. Technician B says that if there is air inthe fuel system, the engine will quit or not start at all. Who is correct?

What can cause a fuel in oil condition?

To measure fuel pump outlet pressure, where is the pressure gauge installed?

Which of the following statements is correct with regard to priming fuel systems?

Fuel volume can be measured with a __________.

Technician A says that diesel fuel systems do not require fuel return circuits. Technician B says that almost all diesel fuel systems havefuel return circuits to allow fuel to circulate through the injectors and other fuel system components to remove vapor and lubricate andcool fuel system components. Who is correct?

Technician A says that fuel-water separators, water-in-fuel sensors, fuel heaters, and filters are often integrated into a single compactunit. Technician B says that water-in-fuel (WIF) sensors use an electrical conductivity probe to sense a specific level of water in fuel andcause a dash-mounted light to illuminate. Who is correct?

A vacuum valve in a fuel cap lets __________.

Primary fuel efficiency is 95–98% at __________.

Technician A says that diesel engines require a low-pressure fuel supply to transfer fuel to the high-pressure system. Technician B says the engine needs pressure and volume from the low-pressure fuel system for the engine to function correctly. Who is correct?

Technician A says that low diesel fuel temperature causes problems, but high fuel temperatures are not a problem. Technician B says that both low andhigh fuel temperature can cause problems with diesel fuel. Who is correct?