Automotive Technology
7th Edition
ISBN: 9781337794213
Author: ERJAVEC, Jack.
Publisher: Cengage,
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Chapter 12, Problem 4ASRQ
To determine
The correct option for the statement, "Technician A says that "cylinder heads often crack between the valve seats and around the spark plug holes. Technician b says cracks often appear around the intake ports"
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Chapter 12 Solutions
Automotive Technology
Ch. 12 - Explain staged and continuously variable value...Ch. 12 - Prob. 2SACh. 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 - True False? Fiats MultiAir system relies on...Ch. 12 - True False? Camshaft straightness is checked using...Ch. 12 - Which of the following is not true of knurling? It...Ch. 12 - To allow the engine to run on the Atkinson cycle,...Ch. 12 - To ensure proper seating of the valve, the valve...
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 - What type of valve lifter automatically...Ch. 12 - Prob. 8MCCh. 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 - Prob. 4ASRQCh. 12 - Technician A says an engine may use one or more...Ch. 12 - Technician A says it is not necessary to measure...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:...Ch. 12 - While discussing camshafts Technician A says valve...
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- Technician A says head gasket thickness has an effect on compression ratio. Technician B says connecting rod length has an effect on compression ratio. Who is correct? Technician A Technician B Both A and B Neither A nor Barrow_forwardWhat should be done with cylinders that have leaking valve stems?arrow_forwardDescribe the difference between an argon cylinder valve fitting and a carbon dioxide cylinder valve fitting.arrow_forward
- Technician A says that when using a flare-nut wrench, two wrenches must often be used. Technician B says to use an open-end wrench on fuel fittings. Who is right?arrow_forwardThe piston top surface is generally flat in the indirect injection True Falsearrow_forwardWhich of the following is not measured with a feelergauge set?a. Piston ring side clearanceb. Flywheel runoutc. Crankshaft end playd. Spark plug gaparrow_forward
- Carbon deposits on the intake valve or seat may cause the valve not to close properly. Tech a says that the flywheel will be harder to spin when starting the engine. Tech b says that the engine will loose power. Who is correct?arrow_forwardExplain the difference between the inherent and installed valve characteristics.arrow_forwardWhich of the following are not typically found in the block of a modern engine? a. Pistons b. Crankshaft c. Valves d. Oil pumparrow_forward
- Explain why a small PCV valve opening is adequate at idle speed.arrow_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_forwardExplain the working of two stroke petrol engine with a diagram.arrow_forward
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