Automotive Technology
7th Edition
ISBN: 9781337794213
Author: ERJAVEC, Jack.
Publisher: Cengage,
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Question
Chapter 4, Problem 8MC
To determine
The correct theory amongst the two theories given by Technician A and Technician B.
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An engine starts and runs briefly after a small quantity of fuel is put into the spark plug hole, but it doesn't not start when fuel is added to the carburetor throat. Tech a says that the problem may be that the exhaust valve is not closing completely due to carbon buildup. Tech b says it may be due to a defective carburetor mounting gasket. Who is correct?
While discussing ignition timing requirements: Technician A says that more advanced timing is desired when the engine is under a heavy load. Technician B says that more advanced timing is desired when the engine is running at high engine speeds. Who is correct?
How do most electronic ignition systems differ?
number of spark plugs
the use of CMP and CKP sensors
number of transistors
the use of a distributor
Chapter 4 Solutions
Automotive Technology
Ch. 4 - Prob. 1SACh. 4 - Explain the four strokes of the internal...Ch. 4 - In addition to the battery, what does the charging...Ch. 4 - What is meant by the term regenerative braking?Ch. 4 - Which of the following is not a common emission...Ch. 4 - Automatic transmissions use a instead of a clutch...Ch. 4 - Which of the following is not one of the strokes...Ch. 4 - Prob. 4MCCh. 4 - Which is not a common automotive fuel? Gasoline...Ch. 4 - What does the valve train do? It delivers fuel to...
Ch. 4 - Technician A says that liquid cooling an engine...Ch. 4 - Prob. 8MCCh. 4 - Which emission control system introduces exhaust...Ch. 4 - Prob. 10MCCh. 4 - Technician A says that a transaxle delivers torque...Ch. 4 - Which of the following is not part of the running...Ch. 4 - Which of the following statements about unibody...Ch. 4 - Which type of transmission uses pulleys to change...Ch. 4 - Prob. 15MCCh. 4 - What two major engine components work together to...Ch. 4 - Technician A says that an air-conditioning system...Ch. 4 - The boiling point of the coolant in an engines...Ch. 4 - While discussing the operation of air-conditioning...Ch. 4 - Prob. 20MCCh. 4 - Which of the following is not accomplished by the...
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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
- While discussing ignition systems: Technician A says that an ignition system must supply high-voltage surges to the spark plugs. Technician B says that the system must maintain the spark long enough to burn all of the air-fuel mixture in the cylinder. Who is correct? a. Technician A b. Technician B c. Both A and B d. Neither A nor Barrow_forwardAn engine cranks slowly: Technician A says that a possible cause of the problem is poor starter circuit connections. Technician B says that an engine problem could be the cause. Who is correct? Technician A Technician B Both A and B Neither A nor Barrow_forwardAn engine overheats in traffic but is fine when driving: Technician A says a faulty thermostat may be the cause. Technician B says the fan clutch could be the cause. Who is correct? a. Technician A b. Technician B c. Both A and B d. Neither A nor Barrow_forward
- When diagnosing a no-crank no-start condition, no voltage is present at the S terminal of the solenoid while attempting to crank the engine. Technician A says a faulty starter motor is the cause. Technician B says a shorted safety switch is the cause. Who is correct? Technician A Technician B Both A and B Neither A nor Barrow_forwardIf the solenoid clicks while trying to crank the engine with the starter, which of the following is not a probable cause? A faulty neutral safety switch Low battery voltage Low voltage available to the solenoid An open in the hold-in windingarrow_forwardCranking current is excessive but is normal when the starter is bench tested: Technician A says the problem could be with the positive battery connection to the solenoid. Technician B says there could be an engine mechanical problem. Who is correct? a. Technician A b. Technician B c. Both A and B d. Neither A nor Barrow_forward
- In El systems using one ignition coil for every two cylinders: Technician A says that two plugs fire at the same time with the same voltage used by each spark plug. Technician B says that one plug fires in the normal direction (center to side electrode) and the other in reversed polarity (side to center). Who is correct? a. Technician A b. Technician B c. Both A and B d. Neither A nor Barrow_forwardTechnician A says that if a drive belt does not have the proper tension, it may produce squealing and chirping noises. Technician B says belt tension should be checked even if the engine has an automatic belt tensioner. Who is correct? Technician A Technician B Both A and B Neither A nor Barrow_forwardWhile checking for conditions that might cause coolant electrolysis: Technician A places the positive lead of a voltmeter into the coolant and connects the negative lead to a ground. Technician B checks for the presence of voltage in the coolant with the ignition off. Who is correct? Technician A Technician B Both A and B Neither A nor Barrow_forward
- Technician A says that some antitheft systems sound an alarm if someone enters the vehicle without a key Technician B says that some antitheft devices prevent the engine from starting. Who is correct? Technician A Technician B Both A and B Neither A nor Barrow_forwardTrue or False? A spark plug with two ground electrodes will provide two separate sparks when fired.arrow_forwardWhich of the following will cause one or more, but not all, firing lines to be higher than normal? a. High resistance in the spark plug wire b. Faulty fuel injector c. Defective spark plug d. All of the abovearrow_forward
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