Question 1

E85 means that the fuel is made from ________.

Accepted Answer

A)  85% gasoline and 15% ethanol 
B)  ethanol that has 15% water 
C)  85% ethanol and 15% gasoline 
D)  pure ethyl alcohol 
A)  85% gasoline and 15% ethanol 
B)  ethanol that has 15% water 
C)  85% ethanol and 15% gasoline 
D)  pure ethyl alcohol C

Question 2

Which of the following is considered to be a synthetic or man-made fuel?

Accepted Answer

A)  Fischer-Tropsch 
B)  E-diesel 
C)  P-series 
D)  Both A and B 
A)  Fischer-Tropsch 
B)  E-diesel 
C)  P-series 
D)  Both A and B D

Question 3

Technician A says that gasoline should always be purchased from a busy station, and the vehicle's tank should not be overfilled. Technician B says that oxygenated fuels contain extra oxygen to help increase CO exhaust emissions. Which technician is correct?

Accepted Answer

A)  Technician A only 
B)  Technician B only 
C)  Both technicians A and B 
D)  Neither technician A nor B 
A)  Technician A only 
B)  Technician B only 
C)  Both technicians A and B 
D)  Neither technician A nor B A

Question 4

What personal protective equipment should be used when working around alternative fuels?

Accepted Answer

A)  Protective gloves 
B)  Safety glasses 
C)  Long-sleeved shirt and long pants 
D)  All of the above 
A)  Protective gloves 
B)  Safety glasses 
C)  Long-sleeved shirt and long pants 
D)  All of the above

Question 5

Overfilling the fuel tank can damage which component?

Accepted Answer

A)  Fuel injectors 
B)  Fuel pump 
C)  Gas cap 
D)  Charcoal canister 
A)  Fuel injectors 
B)  Fuel pump 
C)  Gas cap 
D)  Charcoal canister

Question 6

Which method of blending ethanol with gasoline is the most accurate?

Accepted Answer

A)  Splash 
B)  Sequential 
C)  In-line 
D)  All of the above 
A)  Splash 
B)  Sequential 
C)  In-line 
D)  All of the above

Question 7

Using E85 can result in which of these?

Accepted Answer

A)  Decreased exhaust emissions 
B)  Increased fuel economy 
C)  Increased exhaust emissions 
D)  Reduced fuel economy 
A)  Decreased exhaust emissions 
B)  Increased fuel economy 
C)  Increased exhaust emissions 
D)  Reduced fuel economy

Question 8

A CNG refueling station pump is designated as a P24 filling station. This means ________.

Accepted Answer

A)  it will take 24 hours to refuel, using the slow-fill method 
B)  the pump can refuel at a pressure of up to 2400 PSI 
C)  the pump can only deliver 24 gallons at a time 
D)  the CNG is 24% natural gas and 76% propane 
A)  it will take 24 hours to refuel, using the slow-fill method 
B)  the pump can refuel at a pressure of up to 2400 PSI 
C)  the pump can only deliver 24 gallons at a time 
D)  the CNG is 24% natural gas and 76% propane

Question 9

A flex-fuel vehicle can be identified by ________.

Accepted Answer

A)  VIN 
B)  emblems on the side, front, and/or rear of the vehicle 
C)  VECI 
D)  All of the above 
A)  VIN 
B)  emblems on the side, front, and/or rear of the vehicle 
C)  VECI 
D)  All of the above

Question 10

Technician A says that the research octane number is higher than the motor octane number. Technician B says that the octane rating posted on fuel pumps is an average of the two ratings. Which technician is correct?

Accepted Answer

A)  Technician A only 
B)  Technician B only 
C)  Both technicians A and B 
D)  Neither technician A nor B 
A)  Technician A only 
B)  Technician B only 
C)  Both technicians A and B 
D)  Neither technician A nor B

Question 11

Technician A says that in going to high altitudes, engines produce lower power. Technician B says that most engine control systems can compensate the air-fuel mixture for changes in altitude. Which technician is correct?

Accepted Answer

A)  Technician A only 
B)  Technician B only 
C)  Both technicians A and B 
D)  Neither technician A nor B 
A)  Technician A only 
B)  Technician B only 
C)  Both technicians A and B 
D)  Neither technician A nor B

Question 12

Winter-blend gasoline ________.

Accepted Answer

A)  vaporizes more easily than summer-blend gasoline 
B)  can cause engine driveability problems if used during warm weather 
C)  has a higher RVP 
D)  All of the above 
A)  vaporizes more easily than summer-blend gasoline 
B)  can cause engine driveability problems if used during warm weather 
C)  has a higher RVP 
D)  All of the above

Question 13

Technician A says that spark knock, ping, and detonation are different names for abnormal combustion. Technician B says that any abnormal combustion raises the temperature and pressure inside the combustion chamber and can cause severe engine damage. Which technician is correct?

Accepted Answer

A)  Technician A only 
B)  Technician B only 
C)  Both technicians A and B 
D)  Neither technician A nor B 
A)  Technician A only 
B)  Technician B only 
C)  Both technicians A and B 
D)  Neither technician A nor B

Question 14

What color is diesel fuel dyed if it is for off-road use only?

Accepted Answer

A)  Green 
B)  Yellow 
C)  Red 
D)  Blue 
A)  Green 
B)  Yellow 
C)  Red 
D)  Blue

Question 15

Technician A says that the use of premium high-octane gasoline in an engine designed to use regular-grade gasoline will increase engine power. Technician B says that flexible fuel vehicles are designed to operate on gasoline or gasoline-ethanol blends up to 85% ethanol. Which technician is correct?

Accepted Answer

A)  Technician A only 
B)  Technician B only 
C)  Both technicians A and B 
D)  Neither technician A nor B 
A)  Technician A only 
B)  Technician B only 
C)  Both technicians A and B 
D)  Neither technician A nor B

Question 16

Technician A says that gasoline is a complex blend of hydrocarbons. Technician B says that gasoline is blended for seasonal usage to achieve the correct volatility for easy starting and maximum fuel economy. Which technician is correct?

Accepted Answer

A)  Technician A only 
B)  Technician B only 
C)  Both technicians A and B 
D)  Neither technician A nor B 
A)  Technician A only 
B)  Technician B only 
C)  Both technicians A and B 
D)  Neither technician A nor B

Question 17

Which of these procedures used to convert coal-to-liquid fuel, creates a synthetic crude, called syncrude, which is then refined to produce gasoline or diesel fuel?

Accepted Answer

A)  Direct method 
B)  Indirect method 
C)  Cracking 
D)  Distillation 
A)  Direct method 
B)  Indirect method 
C)  Cracking 
D)  Distillation

Question 18

Vapor lock can occur under which of these conditions?

Accepted Answer

A)  High heat near fuel lines 
B)  RVP too high 
C)  During both A and B 
D)  During neither A nor B 
A)  High heat near fuel lines 
B)  RVP too high 
C)  During both A and B 
D)  During neither A nor B

Question 19

The fuel in a CNG fueled vehicle is stored at a pressure as high as 3500 PSI. The CNG is delivered to the mixture control valve at a pressure of ________.

Accepted Answer

A)  150 to 175 PSI 
B)  0.5 PSI 
C)  4 to 6 PSI 
D)  None of these 
A)  150 to 175 PSI 
B)  0.5 PSI 
C)  4 to 6 PSI 
D)  None of these

Question 20

Exxon Mobil has developed a process for converting methanol (methyl alcohol) into gasoline in a process called ________.

Accepted Answer

A)  MTBE (methyl tertiary butyl ether) 
B)  TBA (tertiary butyl alcohol) 
C)  ethanol-to-gasoline (ETG) 
D)  methanol-to-gasoline (MTG) 
A)  MTBE (methyl tertiary butyl ether) 
B)  TBA (tertiary butyl alcohol) 
C)  ethanol-to-gasoline (ETG) 
D)  methanol-to-gasoline (MTG)

Exam 2: Gasoline, Alternative Fuels, and Diesel Fuels

E85 means that the fuel is made from ________.

Which of the following is considered to be a synthetic or man-made fuel?

Technician A says that gasoline should always be purchased from a busy station, and the vehicle's tank should not be overfilled. Technician B says that oxygenated fuels contain extra oxygen to help increase CO exhaust emissions. Which technician is correct?

What personal protective equipment should be used when working around alternative fuels?

Overfilling the fuel tank can damage which component?

Which method of blending ethanol with gasoline is the most accurate?

Using E85 can result in which of these?

A CNG refueling station pump is designated as a P24 filling station. This means ________.

A flex-fuel vehicle can be identified by ________.

Technician A says that the research octane number is higher than the motor octane number. Technician B says that the octane rating posted on fuel pumps is an average of the two ratings. Which technician is correct?

Technician A says that in going to high altitudes, engines produce lower power. Technician B says that most engine control systems can compensate the air-fuel mixture for changes in altitude. Which technician is correct?

Winter-blend gasoline ________.

Technician A says that spark knock, ping, and detonation are different names for abnormal combustion. Technician B says that any abnormal combustion raises the temperature and pressure inside the combustion chamber and can cause severe engine damage. Which technician is correct?

What color is diesel fuel dyed if it is for off-road use only?

Technician A says that the use of premium high-octane gasoline in an engine designed to use regular-grade gasoline will increase engine power. Technician B says that flexible fuel vehicles are designed to operate on gasoline or gasoline-ethanol blends up to 85% ethanol. Which technician is correct?

Technician A says that gasoline is a complex blend of hydrocarbons. Technician B says that gasoline is blended for seasonal usage to achieve the correct volatility for easy starting and maximum fuel economy. Which technician is correct?

Which of these procedures used to convert coal-to-liquid fuel, creates a synthetic crude, called syncrude, which is then refined to produce gasoline or diesel fuel?

Vapor lock can occur under which of these conditions?

The fuel in a CNG fueled vehicle is stored at a pressure as high as 3500 PSI. The CNG is delivered to the mixture control valve at a pressure of ________.

Exxon Mobil has developed a process for converting methanol (methyl alcohol) into gasoline in a process called ________.

The Diagnostic Process

Circuit Testers and Digital Meters

Oscilloscopes and Dsos

Engine Systems

In-Vehicle Engine Service

Valve Train and Variable Valve Timing Diagnosis

Engine and Misfire Diagnosis

Can and Network Communications

Onboard Diagnosis

Global Obd Ii and Mode 06

Immobilizer Systems

Starting and Charging System Diagnosis

Ignition System Operation and Diagnosis

Temperature Sensors

Throttle Position Tp Sensors

Map and Maf Sensors

Electronic Throttle Control Systems

Oxygen Sensors

Fuel Trim Diagnosis

Fuel Pumps, Lines, and Filters

Fuel-Injection Components and Operation

Gasoline Direct-Injection Systems

Fuel-Injection System Diagnosis and Service

Electronic Transmission Controls

Vehicle Emissions Standards and Testing

Emission Control Devices Operation and Diagnosis

Module Reprogramming

Symptom-Based Diagnosis

Filters