Automotive Technology (Custom)
6th Edition
ISBN: 9781337495356
Author: ERJAVEC
Publisher: Cengage
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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 (Custom)
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 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_forward
- Technician 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_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
- Why must the reverse flow valve and the flashback arrestor be checked on a regular basis?arrow_forwardWhich of the following is not a type of valve guide seal? Positive Negative Umbrella O-ringarrow_forwardWhich of the following statements is not true? A direct acting PRV: Is complex in construction, therefore can malfunction if a very small dirt gets trapped inside the valve, which may result in safety hazard Offers uneven flow Does not provide precise pressure control Causes more wastage of HP compared to a compound one Which of the following basic system components has the primary function of removing the heat of compression from the air? Receiver Relief valve Pressure regulator Dryer Aftercooler Which of the following statements is true? A single acting cylinder may have two ports at two different ends and pressurized fluid can be directed to both of them A single acting cylinder with two ports will can be used as a double acting cylinder A single acting cylinder may have two ports at two different ends but into only one of the ports pressurized fluid is being directed A single acting cylinder…arrow_forward
- Choose correct answer: A single way valve that lets air into the pneumatic system, but doesn’t allow the air to return back in same path is known as ____________ Receiver valve Three-way valve Direction control valve check valvearrow_forwardWhat safety feature does the curcuit possess in addition to the pressure relief valve?arrow_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_forward
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