Automotive Technology
7th Edition
ISBN: 9781337794213
Author: ERJAVEC, Jack.
Publisher: Cengage,
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Chapter 27, Problem 3ASRQ
To determine
The technician with the correct approach.
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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?
Title
True or False? A spark plug with two ground electrodes will provide two separate sparks when fired..
Description
True or False? A spark plug with two ground electrodes will provide two separate sparks when fired.
Why is high voltage needed to establish a spark across the gap of a spark plug? List the advantages of having one ignition coil per cylinder.
Which of the following is a function of all ignition systems? a. To generate sufficient voltage to force a spark across the spark plug gap b. To time the arrival of the spark to coincide with the movement of the engine’s pistons c. To vary the spark arrival time based on varying operating conditions d. All of the above
The required gap in ignition
system between----
-0.4 to 5
O .-4 to 5
0.4 to 0.5
-4 to 0.5
Skip
The suitable thread of spark plug
for heavy engine is
O M18
M19
M15
M16
O Skip
Chapter 27 Solutions
Automotive Technology
Ch. 27 - Prob. 1SACh. 27 - Name the three types of trace pattern display...Ch. 27 - Prob. 3SACh. 27 - List at least two methods of checking the...Ch. 27 - Prob. 5SACh. 27 - What is the typical procedure for checking the...Ch. 27 - What does a slope in the spark line represent?Ch. 27 - What happens if one of the ground electrodes of a...Ch. 27 - True or False? The first test when checking a...Ch. 27 - True or False? Coil secondary resistance is...
Ch. 27 - True or False? On some engines, if the gap between...Ch. 27 - Richer air-fuel mixtures. a. decrease the...Ch. 27 - While checking a pickup coil with an ohmmeter, a...Ch. 27 - A CKP sensor can be checked with all of the...Ch. 27 - Which of the following will cause one or more, but...Ch. 27 - Prob. 1ASRQCh. 27 - Prob. 2ASRQCh. 27 - Prob. 3ASRQCh. 27 - Technician A says that EMI can affect sensor...Ch. 27 - While discussing waste spark EI systems:...Ch. 27 - While discussing how to test a Hall-effect...Ch. 27 - While discussing the possible causes for a...Ch. 27 - Prob. 8ASRQCh. 27 - While discussing EI service and diagnosis:...Ch. 27 - While discussing engine misfire diagnosis:...
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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_forwardTrue or False? A spark plug with two ground electrodes will provide two separate sparks when fired.arrow_forwardWhile discussing ignition timing control in EI systems: Technician A says that when the engine coolant temperature is low, the timing is retarded until normal operating temperature is reached. Technician B says that the PCM will retard the timing during EGR operation. Who is correct? Technician Ac.Both A and B b. Technician 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_forwardWhat does a slope in the spark line represent? a. Low secondary resistance b. High resistance in the primary circuit c. An incorrect air-fuel mixture d. High resistance in both the primary and secondary circuitarrow_forwardWhen 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_forward
- An 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_forwardDiscuss about pros and cons of each type of ignition turrets. Explain what is dwell Angle and importance of it to engine operation. Explain how emission controlling is done in two types of ignition systems discussed here. Explain the working of vacuum advancer unit Discuss about pros and cons of each type of ignition turrets. Explain what is Hall Effect, and explain how it woks What are your thoughts about each type’s emission controlling? Why do you think DIS system replaced Distributor type ignition systems?arrow_forwardName the engine operating conditions thatmost affect ignition timing requirements.arrow_forward
- If 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_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_forwardWhile diagnosing the cause of TCC shudder: Technician A checks the fluid pressure sent to the clutch. Technician B says that because the shudder occurs only after the clutch is engaged, the problem is the engine, transmission, or another component of the driveline. Who is correct?arrow_forward
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