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Exam 16: Reassembly and Starting

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Question 1

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Technician A says when bearing clearance is excessive, polish the entire parting area. Technician B says for a 5-main bearing block, the typical torque sequence is 1,5,3,2,4. Which technician is correct?

A) Technician A
B) Technician B
C) Both technicians
D) Neither technician

E) C) and D)
F) A) and B)

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Question 2

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Briefly explain what happens when vapor lock occurs.

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Vapor lock occurs when fuel vaporizes in...

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Question 3

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Immediately following an engine overhaul, why should the customer check the oil frequently?

Technician A says valve lash can be set on some engines when it is running. Technician B says to break in the rings, on the highway accelerate to 50 mph and coast back to 35 mph at least 10 times. Who is right?

What tool will we use to check for crankshaft bearing oil clearance?

On an engine with a standard transmission, insure the flexplate is installed correctly.

Technician A says to avoid lubrication on the thrust bearing surfaces. Technician B says when installing main bearing caps, tap them with a ball peen hammer to insure they seat properly. Who is right?

Technician A says backfiring will occur if the distributor is installed 180° off. Technician B says a rebuilt engine should not be run at idle speed for the first few minutes after it is started. Who is right?

A feeler gauge is used to measure mechanical valve lash.

Without protective gloves, it is possible for acid from your hands to etch engine bearings.

Technician A says when reassembling an engine, mushroom-style lifters must be installed after the camshaft. Technician B says it is impossible to straighten a warped camshaft. Who is correct?

Technician A says when the timing is advanced, the idle will be high. Technician B says to check connecting rod side clearance with an inside micrometer. Who is correct?

A technician has installed a new camshaft and is now installing the distributor. Technician A says to be sure that the number one cylinder is on its intake stroke. Technician B says that the engine can be cranked or turned by hand until the distributor and oil pump are aligned. Who is right?

If an engine is difficult to start, spray starting fluid into it while cranking it over.

Technician A says a short piece of fuel hose should be placed over the rod bolts to protect the crankshaft during removal and installation. Technician B says you should wear clean latex gloves before handling engine bearings. Who is correct?

Some main bearings have dowels that must fit into a hole in the block.

Technician A says to soak the piston rings thoroughly in oil before installing them to prevent wear during initial break-in. Technician B says a bad fuel pump can trigger a knock sensor. Who is right?

Technician A says that if a distributor has a gear on the bottom of its shaft, the oil pump cannot be primed in the normal way. Technician B says the lubrication system can be primed with a pressure primer. Who is correct?