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?

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?

Automotive Technology

7th Edition

ISBN:9781337794213

Author:ERJAVEC, Jack.

Publisher:ERJAVEC, Jack.

Chapter12: Upper End Theory And Service

Section: Chapter Questions

Problem 5ASRQ: Technician A says an engine may use one or more valve springs per valve. Technician B says...

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Similar questions

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 B
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?
Explain the operation of a magneto ignition system used in starting a piston engine.
A small horsepower Briggs engine's spark plug is firing too late. Tech a says that the spark plug gap may be to small. Tech b says that the spark plug gap may be too big. Who is correct?
Explain the main cause of abnormal combustion in the engines.
Consider the following statements relevant to the ignition system of SI engine: 1. Too small a dwell angle will lead to the burning of condenser and contact points. 2. Too small a dwell angle will result in misfiring. 3. Too large a dwell angle will result in burning of condenser and contact points. 4. Too large a dwell will result in mistiring. Which of these statements are correct?
A spark plug is examined and it is notice that the plug is fouled with a stick black substance. Tech a says that the engine is running too rich (too much fuel). Tech b says that the plug is oil fouled and that a proper burning plug would be light in tan color. 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?
Differentiate the two types of external combustion engine
While discussing the compression ratios used with engines equipped with a GDI system: Technician A says that higher ratios can be used because ignition timing is normally very advanced. Technician B says that higher ratios are possible because the small droplets of fuel injected directly into the cylinder tend to cool the mixture in the cylinder. Who is correct?a.tech a b.tech b c. Both a and b d. Neither a nor b
Which of the following are not typically found in the block of a modern engine? a. Pistons b. Crankshaft c. Valves d. Oil pump
Which of the following is not one of the strokes of a four-cycle engine? Compression Exhaust Intake Ignition