Technician A says that secondary fuel filters are usually in the range of 5-7 microns. Technician B says that primary fuel filters are usually in the range of 20-25 microns. Who is correct?
Technician A says that the primary fuel filter is usually on the suction side of the transfer pump. Technician B says that the secondary fuel filter is usually on the suction side of the transfer pump. Who is correct?
How will a diesel engine perform when operating on fuel with a high cetane rating in the summer time?
A fuel pressure gauge test on an engine may indicate
The primary fuel filter on an engine is on the _____________ side of the fuel pump.
To determine if the fuel transfer pump for an injection system is operating efficiently, you must test for
Generally, with a mechanical fuel pump, motion is provided to the diaphragm by
All fuel lines in the vehicle that are attached to the frame or engine are made of specialized composite materials or
In a diaphragm type fuel transfer pump, the maximum possible output would be limited by
A fuel transfer pump
When you install a new or reconditioned plunger supply pump on an engine with a diesel injection system you must make sure that
As compared to a direct injection chamber, an engine equipped with pre-combustion chambers will
Some diesel engines have the fuel inlet and return lines cast as part of the cylinder head, while others have separate lines for inlet and return.
The lbs. of fuel consumed per brake horsepower per hour that is used by an engine, is known as
Rapidly and easily ignited diesel fuels would have a ____________ cetane rating.
The filter type that is removed and replaced as a complete filter unit is
The most commonly used diesel fuel in the equipment industry for the majority of the year, temperature permitting, is known as
A diesel fuel with a high viscosity rating
The cloud or wax point of a diesel fuel can be defined as
The centreline of a fuel storage tank should be mounted on a slight downward angle so that
1D fuel is best suited for summer use and has a higher BTU rating than 2D fuel.
Diesel fuel cetane rating indicates
Diesel contains the highest heat value of fuels used in internal combustion engines.
Octane refers to the fuels ability to
Volatility refers to the fuels ability to
Oxygen makes up approximately _______ % of the air.
Charles'' Law states that under constant pressure, the ____________ of a gas varies directly with its absolute temperature.
Boyle''s Law states that if the _______________ on a gas in a confined space is doubled, the gas will be compressed to half its original volume, provided the temperature remains the same.
The resistance of a liquid to flowing is called
Technician A says that you would require a fuel with a higher cetane rating when encountering lower engine temperatures when starting. Technician B says that the lower the ambient temperature, the greater the need for a fuel that will ignite rapidly. Who is correct?
The temperature at which fuel will no longer flow through a fuel line is known as
The temperature at which the wax in fuel separates is known as
The degree of filtration in a filter is measured in
What is cetane required to do as an additive?
Gasoline, diesel fuel, propane and natural gas are all derived from crude oil or petroleum and is made up of hydrogen and
There is a delay between the time that fuel is injected into the cylinder and the time that ignition by the hot air takes place. The duration of this delay is expressed as a(n) __________ number.
Fuel with a high sulphur content is likely to cause
Which of the following may cause a low power complaint?
On a fuel injection pump system, what is the purpose of the restricted fitting in the return fuel line at the outlet of the fuel pump?
What engine performance measurement is found by using the following formula: Torque x RPM divided by 5252?
An injector failure can occur because of
The fuel/water separator filter or sight glass should be drained
Excessive cylinder temperatures are the major cause of ___________ formation.
Fuel heaters should be thermostatically controlled because
The factor(s) that affect the ignition delay period are
Starting fluid should not be used in combination with engines which have
Contaminated or dirty fuel may cause
Diesel fuel conditioner will dissolve ice in the fuel tank.
Using winter fuel in the summer time may cause
Using summer fuel in the winter time may cause
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