Automotive Technology
7th Edition
ISBN: 9781337794213
Author: ERJAVEC, Jack.
Publisher: Cengage,
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Textbook Question
Chapter 31, Problem 6SA
What are three possible problems that can allow fuel pressure to rapidly bleed down once the engine is shut off?
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Chapter 31 Solutions
Automotive Technology
Ch. 31 - List four service precautions for working on the...Ch. 31 - What is indicated by a LTFT reading of 24 percent?Ch. 31 - Describe how testing GDI fuel systems differs from...Ch. 31 - What is the difference between the pulse width and...Ch. 31 - How can you use a dual trace scope to make sure...Ch. 31 - What are three possible problems that can allow...Ch. 31 - What is the purpose of having two accelerator...Ch. 31 - What is indicated by a negative LTFT value?Ch. 31 - What problem may result from dirt buildup on an...Ch. 31 - What is the difference between STFT and LTFT?
Ch. 31 - True or False? The signals from an air-fuel ratio...Ch. 31 - Prob. 2TFCh. 31 - Which of the following is the most likely cause of...Ch. 31 - The PCM checks for a closed throttle plate each...Ch. 31 - Which of the following would not cause a...Ch. 31 - While discussing the causes of...Ch. 31 - While discussing IAC valve diagnosis: Technician A...Ch. 31 - While discussing IAC motor removal, service, and...Ch. 31 - While discussing injector testing: Technician A...Ch. 31 - While discussing airflow sensors: Technician A...Ch. 31 - While discussing scan tool diagnosis of fuel...Ch. 31 - While discussing a high idle speed problem:...Ch. 31 - While discussing the causes of a rich air-fuel...Ch. 31 - While diagnosing an idle speed problem: Technician...Ch. 31 - While looking at fuel trim values: Technician A...
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- What are the major pollutants from the exhaust of SI and CI engines.arrow_forwardWhat is the range of operating AFR in gasoline engines?arrow_forwardWhich of the following is an expression of how much of the heat formed during the combustion process is available as power from the engine? Mechanical efficiency Engine efficiency Volumetric efficiency Thermal efficiencyarrow_forward
- Which of the following is not an effective way to determine if an engine has an internal coolant leak? Performing a pressure test on the system Visually inspecting the exhaust, coolant, and engine oil Using a dye penetrant and black light Using a combustion leak testerarrow_forwardWhich of the following are complexities that are ignored when assuming air-standard for an internal-combustion engine? Select all that apply. Variation of specific heat values with a change in temperature Changes in pressure during the power stroke (expansion) Changes in chemical composition due to combustion O Heat transfer through the piston or cylinder wallsarrow_forwardIt is a multiple choice marine diesel engine question, please specify the correct option.arrow_forward
- What is the Engine specific volume?arrow_forwardWhich is not a cause of detonation? Wrong ignition timing Allowing the engine to overheat Fuel/air mixture too lean Using a fuel grade higher than recommendedarrow_forwardWhich of the following is the best description of the power stroke? The ignition of the air fuel mixture increases pressure in the cylinder, which applies force to the face of the piston, driving it down. As the piston travels upward, it pushes the products of combustion out of the open exhaust valve. The crankshaft drives the piston down as the flywheel absorbs the energy created by the ignition of air fuel mixture. An air-fuel mixture is drawn into the combustion chamber as the piston moves toward the bottom of the cylinder.arrow_forward
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