× Didn't find what you were looking for? Ask a question
Top Posters
Since Sunday
a
5
k
5
c
5
B
5
l
5
C
4
s
4
a
4
t
4
i
4
r
4
r
4
Home Q & A Board Other Fields Homework Help Trades and Apprenticeship
Automotive technology, civil technology, electronics, construction, service sector, horticulture, etc.
New Topic  
Subject
Last post
The low-pressure fuel system contains ________. A) A transfer pump B) The fuel filters C) A ...
The low-pressure fuel system contains ________. A) A transfer pump B) The fuel filters C) A ...
The low-pressure fuel system contains ________.
A) A transfer pump
B) The fuel filters
C) A fuel level sending unit/tank pick-up
D) All of the above
Meesh1234   63   3 Replies
5 years ago
The volume of fuel being returned to the tank is being discussed. Technician A says that it is ...
The volume of fuel being returned to the tank is being discussed. Technician A says that it is ...
The volume of fuel being returned to the tank is being discussed. Technician A says that it is normal for a small amount of fuel to be returned to the tank by the high-pressure pump and the injectors. Technician B says that any fuel being returned to
redesace90   30   2 Replies
5 years ago
The diesel fuel cooler is being discussed. Technician A says that high-pressure fuel systems ...
The diesel fuel cooler is being discussed. Technician A says that high-pressure fuel systems ...
The diesel fuel cooler is being discussed. Technician A says that high-pressure fuel systems generate a lot of heat. Technician B says that temperature affects the density of the diesel fuel. Which technician is correct?
A) Technician A only
B) Tec
beunique123!   68   1 Reply
5 years ago
Replacement fuel filter elements are being discussed. Technician A says that an improperly installed ...
Replacement fuel filter elements are being discussed. Technician A says that an improperly installed ...
Replacement fuel filter elements are being discussed. Technician A says that an improperly installed filter element may result in fuel not being delivered to the high-pressure fuel injection system. Technician B says that the use of an incorrect fuel
NegativePanda   40   3 Replies
5 years ago
The low-pressure fuel system is being discussed. Technician A says that the system must provide an ...
The low-pressure fuel system is being discussed. Technician A says that the system must provide an ...
The low-pressure fuel system is being discussed. Technician A says that the system must provide an adequate volume of fuel to the high-pressure fuel injection system. Technician B says that the system must provide fuel at a minimum pressure to the hi
jmg89   77   2 Replies
5 years ago
The use of B20 fuel in a Cummins diesel engine requires the installation of a(an) ________. A) ...
The use of B20 fuel in a Cummins diesel engine requires the installation of a(an) ________. A) ...
The use of B20 fuel in a Cummins diesel engine requires the installation of a(an) ________.
A) Osmosis screen
B) Optional fuel heater tube
C) Optional extra fuel filter
D) B20 fuel tank
lodidodiclaudie   127   3 Replies
5 years ago
The high compression in a diesel engine can generate temperatures as high as ________ degrees ...
The high compression in a diesel engine can generate temperatures as high as ________ degrees ...
The high compression in a diesel engine can generate temperatures as high as ________ degrees F.
A) 2,800
B) 4,900
C) 1,600
D) 3,000
wwashington2   110   1 Reply
5 years ago
To ensure proper seating, a glow plug should be installed with a(an) ________ wrench. A) ...
To ensure proper seating, a glow plug should be installed with a(an) ________ wrench. A) ...
To ensure proper seating, a glow plug should be installed with a(an) ________ wrench.
A) Torque
B) Impact
C) Flare nut
D) 6 point box end
matarata   82   2 Replies
5 years ago
The intake manifold heater will shut OFF at about ________ degrees F. A) 15-21 B) 60-70 C) ...
The intake manifold heater will shut OFF at about ________ degrees F. A) 15-21 B) 60-70 C) ...
The intake manifold heater will shut OFF at about ________ degrees F.
A) 15-21
B) 60-70
C) 30
D) 32
andreaerob   54   2 Replies
5 years ago
Where is the EGR valve located on a diesel engine?
Where is the EGR valve located on a diesel engine?
Where is the EGR valve located on a diesel engine?
A) On the turbocharger
B) On the intake manifold
C) At the outlet of the air filter housing
D) Near the catalytic converter
NikNik   52   3 Replies
5 years ago
What is the purpose of the throttle valve on a diesel engine?
What is the purpose of the throttle valve on a diesel engine?
What is the purpose of the throttle valve on a diesel engine?
A) Assist EGR flow into the engine
B) Control engine speed
C) Used for cruise control
D) Block air flow to shut off the engine
softballjunkie1   54   2 Replies
5 years ago
A vehicle has an illuminated MIL and a DTC P0401 is stored. What does this indicate?
A vehicle has an illuminated MIL and a DTC P0401 is stored. What does this indicate?
A vehicle has an illuminated MIL and a DTC P0401 is stored. What does this indicate?
A) Low EGR flow
B) EGR flow too high
C) A loose fuel cap
D) A leak in the exhaust system
ejones3535   69   2 Replies
5 years ago
Which of these is used in controlling the EGR valve?
Which of these is used in controlling the EGR valve?
Which of these is used in controlling the EGR valve?
A) PCM
B) Pulse width modulation
C) Glow plug module
D) Both A and B
bosoxsilva   31   3 Replies
5 years ago
Technician A says that a voltmeter can be used to check for voltage at the glow plug terminal. ...
Technician A says that a voltmeter can be used to check for voltage at the glow plug terminal. ...
Technician A says that a voltmeter can be used to check for voltage at the glow plug terminal. Technician B says that an ohmmeter reading of 0.9 ohms means the glow plug is defective. Which technician is correct?
A) Technician A only
B) Technician
bunbun11   48   1 Reply
5 years ago
What is the purpose of the glow plugs used on a diesel engine?
What is the purpose of the glow plugs used on a diesel engine?
What is the purpose of the glow plugs used on a diesel engine?
A) Illuminate the engine compartment at night
B) Increase resistance in the charging system
C) Used to plug cooling system leaks
D) Assist starting in cold weather
dwayned   50   3 Replies
5 years ago
The charge air cooler increases the ________ of the air coming from the turbocharger. A) ...
The charge air cooler increases the ________ of the air coming from the turbocharger. A) ...
The charge air cooler increases the ________ of the air coming from the turbocharger.
A) Speed
B) Temperature
C) Density
D) Amount
frenchtoast   47   3 Replies
5 years ago
A boost pressure sensor is used to monitor the air pressure in the ________. A) Brake ...
A boost pressure sensor is used to monitor the air pressure in the ________. A) Brake ...
A boost pressure sensor is used to monitor the air pressure in the ________.
A) Brake booster
B) Intake manifold
C) EGR system
D) Air filter housing
Laurenrees98   78   1 Reply
5 years ago
It is important to properly torque the glow plugs during installation because ________. A) They ...
It is important to properly torque the glow plugs during installation because ________. A) They ...
It is important to properly torque the glow plugs during installation because ________.
A) They use a taper seat
B) The O-ring needs to be properly compressed
C) The sealing gasket needs to be compressed
D) The sealing washer needs to be seated
hello there   34   2 Replies
5 years ago
Carbon buildup in the EGR system is most likely caused by ________. A) Highway driving B) ...
Carbon buildup in the EGR system is most likely caused by ________. A) Highway driving B) ...
Carbon buildup in the EGR system is most likely caused by ________.
A) Highway driving
B) Short drive cycles
C) Excessive idle time
D) Both B and C
DJSkopes   21   2 Replies
5 years ago
Why is a charge air cooler used?
Why is a charge air cooler used?
Why is a charge air cooler used?
A) To help control the temperature of the coolant
B) To improve engine performance (power)
C) To reduce NOx emissions
D) To help cool the interior (Passenger area) of the vehicle
rogers   31   2 Replies
5 years ago
The MAF sensor used on a light diesel engine is used for ________. A) Fuel control B) EGR ...
The MAF sensor used on a light diesel engine is used for ________. A) Fuel control B) EGR ...
The MAF sensor used on a light diesel engine is used for ________.
A) Fuel control
B) EGR control
C) Exhaust backpressure control
D) Air filter restriction detection
kellz33   56   1 Reply
5 years ago
The operation of glow plugs is being discussed. Technician A says that glow plugs help reduce ...
The operation of glow plugs is being discussed. Technician A says that glow plugs help reduce ...
The operation of glow plugs is being discussed. Technician A says that glow plugs help reduce cold-start emissions and the level of white smoke caused by poor fuel atomization. Technician B says that not all glow plugs operate on 12 volts. Which tech
ChesterNeupt   57   3 Replies
5 years ago
What can be used to remove carbon from an EGR cooler?
What can be used to remove carbon from an EGR cooler?
What can be used to remove carbon from an EGR cooler?
A) Distilled water
B) Simple Green cleaner
C) Boiling hot soapy water
D) Clean diesel fuel
sukhmeet   22   2 Replies
5 years ago
Which of the following emissions is decreased with the use of EGR?
Which of the following emissions is decreased with the use of EGR?
Which of the following emissions is decreased with the use of EGR?
A) CO2
B) NOx
C) CO
D) HC
DJSkopes   24   2 Replies
5 years ago
The replacement interval of the air filter element is best determined by which of the ...
The replacement interval of the air filter element is best determined by which of the ...
The replacement interval of the air filter element is best determined by which of the following?
A) A visual inspection using a shop light
B) Replacement based on time and miles
C) Replacement based on the filter minder
D) The color of the filter
SethHuddleston   35   3 Replies
5 years ago
Late-model diesel engines use ________ to help cool the turbocharger bearings. A) Cooling ...
Late-model diesel engines use ________ to help cool the turbocharger bearings. A) Cooling ...
Late-model diesel engines use ________ to help cool the turbocharger bearings.
A) Cooling fins
B) Engine coolant
C) Engine oil
D) Refrigerant
Nakeiat   53   1 Reply
5 years ago
Technician A says that a turbocharger delivers decreased boost pressure when at a high altitude. ...
Technician A says that a turbocharger delivers decreased boost pressure when at a high altitude. ...
Technician A says that a turbocharger delivers decreased boost pressure when at a high altitude. Technician B says that boost pressure is not affected by altitude. Which technician is correct?
A) Technician A only
B) Technician B only
C) Both tech
rvahey   40   3 Replies
5 years ago
How does the PCM receive information about the activity of the vanes in a variable vane ...
How does the PCM receive information about the activity of the vanes in a variable vane ...
How does the PCM receive information about the activity of the vanes in a variable vane turbocharger?
A) A signal from the throttle position sensor
B) PWM signal from the vane sensor
C) By way of a small cable
D) From a vane position sensor
JulieCarde   31   2 Replies
5 years ago
The life of the turbocharger bearings can be maximized by ________ before shutting off the ...
The life of the turbocharger bearings can be maximized by ________ before shutting off the ...
The life of the turbocharger bearings can be maximized by ________ before shutting off the engine.
A) Allowing the engine to idle for a few seconds
B) Revving the engine
C) Idling the engine for up to a minute
D) Cooling the turbocharger with a w
evpalmer   59   2 Replies
5 years ago
The turbocharger recaptures energy from the ________ of a diesel engine. A) Air cleaner B) ...
The turbocharger recaptures energy from the ________ of a diesel engine. A) Air cleaner B) ...
The turbocharger recaptures energy from the ________ of a diesel engine.
A) Air cleaner
B) Coolant
C) Exhaust heat
D) Radiator
mzeplin   60   1 Reply
5 years ago
A turbocharger allows ________ when used on a diesel engine. A) High volumetric efficiency B) ...
A turbocharger allows ________ when used on a diesel engine. A) High volumetric efficiency B) ...
A turbocharger allows ________ when used on a diesel engine.
A) High volumetric efficiency
B) Engine RPMs of over 100,000
C) A lower hood profile
D) More exhaust noise
mkama   51   3 Replies
5 years ago
Turbocharger diagnosis is being discussed. Technician A says that a turbocharger fault could set a ...
Turbocharger diagnosis is being discussed. Technician A says that a turbocharger fault could set a ...
Turbocharger diagnosis is being discussed. Technician A says that a turbocharger fault could set a diagnostic trouble code (DTC). Technician B says that since the turbocharger is a mechanical device, not electronic, it cannot set a DTC. Which technic
Bubbles1999   68   2 Replies
5 years ago
An engine equipped with a sequential turbocharger system has both a low- and a high-pressure ...
An engine equipped with a sequential turbocharger system has both a low- and a high-pressure ...
An engine equipped with a sequential turbocharger system has both a low- and a high-pressure turbocharger. Which one receives the intake air first?
A) The high-pressure turbocharger
B) The low-pressure turbocharger
C) They switch back and forth, d
Cookiemonster   78   2 Replies
5 years ago
On a variable vane turbocharger, closing the vanes causes the turbine RPM to ________ . A) ...
On a variable vane turbocharger, closing the vanes causes the turbine RPM to ________ . A) ...
On a variable vane turbocharger, closing the vanes causes the turbine RPM to ________ .
A) Decrease
B) Remain constant
C) Stop
D) Increase
aswizzlebizzle   133   2 Replies
5 years ago
When the wastegate opens it allows the exhaust gases to ________ the turbocharger. A) ...
When the wastegate opens it allows the exhaust gases to ________ the turbocharger. A) ...
When the wastegate opens it allows the exhaust gases to ________ the turbocharger.
A) Pressurize
B) Bypass
C) Flood
D) Heat
Morgs   59   2 Replies
5 years ago
How does ambient air enter the turbocharger?
How does ambient air enter the turbocharger?
How does ambient air enter the turbocharger?
A) Through the center of the compressor
B) At the edges of the turbine
C) From the edge of the compressor housing
D) From the intake valve ports
zurainzlpt   43   2 Replies
5 years ago
When the engine is idling, how much boost pressure is developed?
When the engine is idling, how much boost pressure is developed?
When the engine is idling, how much boost pressure is developed?
A) Low, about 3 PSI
B) None
C) 3 to 8 PSI
D) 1 bar
A1   31   1 Reply
5 years ago
The amount of boost produced by a turbocharger is controlled using ________. A) A wastegate B) ...
The amount of boost produced by a turbocharger is controlled using ________. A) A wastegate B) ...
The amount of boost produced by a turbocharger is controlled using ________.
A) A wastegate
B) A variable-vane turbocharger
C) Both A and B
D) Either A or B
ChesterNeupt   55   2 Replies
5 years ago
Most diesel engine turbochargers are cooled using ________. A) Coolant B) Engine oil C) Air ...
Most diesel engine turbochargers are cooled using ________. A) Coolant B) Engine oil C) Air ...
Most diesel engine turbochargers are cooled using ________.
A) Coolant
B) Engine oil
C) Air from the intercooler
D) Both A and B
Ace_AZ   57   1 Reply
5 years ago
Oil coking means ________. A) The refining of engine oil needed for use in diesel engines B) ...
Oil coking means ________. A) The refining of engine oil needed for use in diesel engines B) ...
Oil coking means ________.
A) The refining of engine oil needed for use in diesel engines
B) The overheating of engine oil
C) The oil cooler used in diesel engines
D) The same thing as synthetic oil
pri   81   2 Replies
5 years ago
New Topic  
Home Q & A Board Other Fields Homework Help Trades and Apprenticeship
Explore
Post your homework questions and get free online help from our incredible volunteers
  1165 People Browsing
 105 Signed Up Today
Start New Topic Take the Tour CoursesNew Study Tools Topics Trending Browse by Textbook
Live Chat
Gallery
  
 208
  
 206
  
 384
Your Opinion
Which industry do you think artificial intelligence (AI) will impact the most?
Votes: 352
Previous poll results: Who's your favorite biologist?