Automotive Technology: A Systems Approach (MindTap Course List)
6th Edition
ISBN: 9781133612315
Author: Jack Erjavec, Rob Thompson
Publisher: Cengage Learning
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Textbook Question
Chapter 34, Problem 7RQ
True or False? No-start, surging, or stalling can be caused by an EGR valve that does not open.
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Chapter 34 Solutions
Automotive Technology: A Systems Approach (MindTap Course List)
Ch. 34 - A rich air-fuel ratio causes HC emissions to...Ch. 34 - What will result from too little EGR flow? And...Ch. 34 - What can result from a charcoal canister that is...Ch. 34 - What happens if a PCV valve is stuck in the open...Ch. 34 - Explain why the I/M 240 and similar tests are...Ch. 34 - How do you test the efficiency of a secondary AIR...Ch. 34 - True or False? No-start, surging, or stalling can...Ch. 34 - List five common causes for high HC emissions.Ch. 34 - Describe carbon monoxide (CO) emissions in...Ch. 34 - A restricted catalytic converter can cause all of...
Ch. 34 - Which of the following statements about EVAP...Ch. 34 - As a catalytic converter begins to deteriorate,...Ch. 34 - How much pressure does a typical EVAP pressure...Ch. 34 - Which of the following exhaust gases is typically...Ch. 34 - Prob. 15RQCh. 34 - While discussing the proper way to test a...Ch. 34 - Prob. 2ASRQCh. 34 - While discussing catalytic converter diagnosis:...Ch. 34 - While discussing EGR valve diagnosis: Technician A...Ch. 34 - While discussing EGR valve diagnosis: Technician A...Ch. 34 - When discussing the diagnosis of a positive back...Ch. 34 - While diagnosing a PCV problem: Technician A says...Ch. 34 - Technician A says that the AIR system should pump...Ch. 34 - While discussing PCV system diagnosis: Technician...Ch. 34 - While discussing EVAP testing: Technician A says...
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- True or False: All gas valves snap open and closed.arrow_forwardAn EGR valve that does not fully close can cause all of the following except ____ . a. a no-start b. stalling c. surging d. detonationarrow_forwardTechnician A says an engine may use one or more valve springs per valve. Technician B says additional valve springs are used to control vibration and increase total pressure. Who is correct? a. Technician A b. Technician B c. Both A and B d. Neither A nor Barrow_forward
- Technician A says it is not necessary to measure valve stem height unless the valves have been replaced. Technician B says valve stem height can be adjusted with shims. Who is correct? Technician A Technician B Both A and B Neither A nor Barrow_forwardTrue or False? Fuel pressure typically is at its highest level when vacuum is applied to the pressure regulator.arrow_forwardWhy must the reverse flow valve and the flashback arrestor be checked on a regular basis?arrow_forward
- Which of the following features does an automatic combination gas valve have? A. Pressure regulator B. Pilot safety shutoff C. Redundant shutoff feature D. All of the abovearrow_forwardWhat is the difference between a reverse flow valve and a flashback arrestor?arrow_forwardWhen discussing the diagnosis of a positive back pressure EGR valve: Technician A says that with the engine running at idle speed, if a hand pump is used to supply vacuum to the EGR valve, the valve should open at 12 in. Hg of vacuum. Technician B says that with the engine not running, any vacuum supplied to the EGR valve should be bled off and the valves diaphragm should not move. Who is correct? a. Technician A only b. Technician B only c. Both A and B d. Neither A nor Barrow_forward
- Which of the following is not a type of valve guide seal? Positive Negative Umbrella O-ringarrow_forwardWhich of the following is true about a sequence valve? Sequence valves: A. Allow a check valve to override its normal operation B. Controls the rate of air flow in a pneumatic system C. Direct air flow to a different area in a circuit when actuated by pressure level D. Open and close the intet and outlet ports in a pneumatic systemarrow_forwardHow does a servo valve work?arrow_forward
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