Automotive Technology
7th Edition
ISBN: 9781337794213
Author: ERJAVEC, Jack.
Publisher: Cengage,
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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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Need a deep-dive on the concept behind this application? Look no further. Learn more about this topic, mechanical-engineering and related others by exploring similar questions and additional content below.Similar questions
- Which of the following is not accomplished by the fuel and air system of a gasoline engine? Stores the fuel for later use Collects and cleans the outside air Delivers fuel to a device that will control the amount of fuel going to the engine Keeps the fuel and air ratio constant regardless of the conditions under which the engine is operatingarrow_forwardWhile discussing GDI systems: Technician A says that this type of system allows engines to run at very lean air-fuel ratios and at higher-than-normal compression ratios. Technician B says that GDI systems eliminate the need to have an EGR valve on the engine. Who is correct?arrow_forwardWhich of the following is not one of the strokes of a four-cycle engine? Compression Exhaust Intake Ignitionarrow_forward
- Which 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_forwardWhich of the following conditions can be revealed by fuel pressure readings? Faulty fuel pump Faulty fuel pressure regulator Restricted fuel delivery system All of the abovearrow_forwardTrue or False? Engine misfires can cause a catalytic converter to overheat.arrow_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_forwardWhen should the ATF level be checked on most vehicles? a. When the engine is cool b. When the engine is at operating temperature and the engine is off c. When the engine is at operating temperature and the engine is on d. It does not matterarrow_forwardList five problems that can be caused by engine overheating.arrow_forward
- Which emission control system introduces exhaust gases into the intake air to reduce the formation of NOXin the combustion chamber? EVAP EGR Air injection PCVarrow_forwardWhich is not a common automotive fuel? Gasoline Diesel Hydrogen Ethanolarrow_forwardHow does a GDI system provide for a stratified charge in the combustion chamber?arrow_forward
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