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 12, Problem 14RQ
Which of the following is not a type of valve guide seal?
- Positive
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Chapter 12 Solutions
Automotive Technology: A Systems Approach (MindTap Course List)
Ch. 12 - Explain staged and continuously variable value...Ch. 12 - Define valve margin.Ch. 12 - What usually causes warpage in an aluminum cylin...Ch. 12 - What are the two ways pushrods can be checked for...Ch. 12 - Which of the following is not true of knurling? It...Ch. 12 - True False? Fiats MultiAir system relies on...Ch. 12 - To allow the engine to run on the Atkinson cycle,...Ch. 12 - Prob. 8RQCh. 12 - To ensure proper seating of the valve, the valve...Ch. 12 - When checking valve fit, contact between the valve...
Ch. 12 - If the valve face and valve seat do not contact...Ch. 12 - Many engines with WT have a phaser mounted to the...Ch. 12 - Multiple valve engines tend to be more efficient...Ch. 12 - Which of the following is not a type of valve...Ch. 12 - Which of the following statements is not true?...Ch. 12 - While discussing the reasons for resurfacing a...Ch. 12 - While inspecting the timing gears of an engine:...Ch. 12 - Technician A says that positive valve stem seals...Ch. 12 - When fitting a freshly ground valve into a freshly...Ch. 12 - Technician A says off-square springs may cause...Ch. 12 - Technician A says it is not necessary to measure...Ch. 12 - Technician A uses a 30-degree stone for topping a...Ch. 12 - While discussing the Valvetronic system:...Ch. 12 - While checking a hydraulic phaser after the...Ch. 12 - While servicing a pair of aluminum cylinder heads:...
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- Technician A says that positive valve stem seals fit tightly around the top of the valve guide. Technician B says that positive stem seals scrape oil off the valve as it moves up and down. Who is correct? Technician A Technician B Both A and B Neither A nor Barrow_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_forwardWhich of the following statements is not true? Normally the desired valve face-to-seat contact area for intake valves is 1 inch. Normally the desired valve face-to-seat contact area for exhaust valves is 1 inch. The average valve seat width is 0.060 inch and the average seat begins 0.030 inch from the valve margin. A properly reconditioned seat has the correct seat width and sealing position on the valve face.arrow_forward
- What type of valve lifter automatically compensates for the effects of engine temperature? Hydraulic Solid Roller All of the abovearrow_forwardTrue or False: All gas valves snap open and closed.arrow_forwardWhich of the following is not true of knurling? It is one of the fastest techniques for restoring the ID dimensions of a worn valve guide. It reduces the amount of work necessary to reseat the valve. It is useful for restoring badly worn guides to their original condition. None of the above.arrow_forward
- True or False? Valve lash is adjusted in many different ways; however, on many OHC engines, the clearance is set by replacing a shim.arrow_forwardWhat should be done to the valve packing if the valve knob does not turn freely after it has been tightened to stop a leak?arrow_forwardTrue or False? Metering and proportioning valves balance the braking characteristics of disc and drum brakes.arrow_forward
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