A high engine compression ratio requires high octane fuel.

Gasoline and diesel engines are classified as external combustion engines.

As engine speed increases, the amount of engine torque increases.

Higher than normal engine temperatures may be caused by a missing thermostat.

To prevent cylinder head warpage during disassembly, randomly remove the head bolts.

Valve lifters with a dished bottom are properly matched to the camshaft and may be reused with the camshaft.

It is a good policy to discard all engine gaskets immediately so they do not mistakenly get reused.

Normally a special puller is required to remove a harmonic balance/vibration damper.

It is an acceptable practice to install the original valve lifters with a new camshaft, if the lifters are in good condition.

An overhead camshaft must be removed before the cylinder head can be disassembled.

Random removal of overhead valve camshaft bearing caps may cause the camshaft to break.

A cylinder block is normally a two-piece casting, machined so that all the parts contained in it fit properly.

Aluminum blocks normally have sleeves or steel liners placed in them to serve as cylinder walls.

A dry cylinder sleeve must be pressed into a block.

A wet cylinder sleeve does not need to be pressed into a block, but slips into position easily.

An engine block must be replaced if one of its cylinder wall sleeves is too thin for boring.

To save weight, most aluminum engine blocks use an aluminum crankshaft.

The clearance between the machined surface of main and rod bearing journals to the bearing inserts should be between 0.0015 inch and 0.002 inch.

Overhead camshafts require pressurized oil lubrication.

The cylinder head is made of cast iron or aluminum.

Exhaust valves must withstand working temperatures of between 1,500 to 4,000 degrees F.

Aluminum cylinder heads weigh roughly half as much as cast iron heads.

Aluminum cylinder head bolts should never be loosened or tightened when the metal is hot.

A spark plug fires before the piston reaches top dead center (TDC).

Ignition timing is set according to the position of the #1 piston.

The distributorless ignition system of a V-6 engine may be designed with three ignition coils.

As engine speed increases ignition timing must be advanced.

An eight-cylinder distributor cap can be installed in only one position on the distributor housing.

Conventional ignition systems are capable of producing higher electrical energy than distributorless ignition systems.

A late-model ignition system can supply 30,000 to 60,000 volts of electricity.

Which of the following is not a stroke of the four-stroke cycle?

What is piston slap?

Which engine system removes burned gases and limits noise produced by the engine?

Which engine design has the highest compression ratio?

Which V-type engine valve train design may use four camshafts?

A four-stroke cycle engine requires at least how many valves at the top of each cylinder?

Technician A measures engine displacement in cubic centimeters. Technician B measures it in cubic inches. Who is correct?

Technician A says a low engine temperature can cause a low idle speed. Technician B says it may cause poor fuel economy. Who is correct?

Technician A says a higher than normal engine temperature may cause spark knock. Technician B says it may cause pinging. Who is correct?

How must parts be when they go into an abrasive blast machine?

The buildup of minerals and deposits inside the cooling system is called

During engine disassembly inspect parts for

Visually inspect a camshaft for

To remove a valve that is stuck in the valve guide

A valve must be discarded if it has

Which of the following must be removed to thoroughly clean an engine block?

Technician A says it is a good practice to clean the engine and engine compartment before beginning to remove the engine. Technician B says all engine fluids should be drained before engine removal. Who is correct?

Technician A says in certain vehicles the engine and transmission must be removed together as a unit. Technician B says if a front-wheel drive transaxle can stay in the vehicle during an engine removal process the drive axles do not need to be disconnected. Who is correct?

Technician A says excessive buildup of sludge may indicate a poor oil exchange schedule. Technician B says sludge inside an engine is normal. Who is correct?

Most pistons used today are made from

The maximum amount of cylinder taper normally allowed is

Each half of a split bearing is made so it is slightly greater than an exact half. What is this extension called?

Which type of piston oil ring is slotted so that excess oil can pass through it?

In addition to lubricating, engine oil must do what to internal components?

A cylinder bore is checked for out of roundness with a

Technician A says that a cylinder wall with too smooth a surface will prevent the piston rings from seating properly. Technician B says a cylinder wall should have a crosshatch honing pattern. Who is correct?

Technician A says that cylinder deglazing is not necessary if the cylinder out-of-roundness is within acceptable limits. Technician B says cylinders should always be bored before installing oversized pistons. Who is correct?

Technician A uses a micrometer to measure the connecting rod journal for taper. Technician B uses a micrometer to measure the connecting rod journal for out-of-roundness. Who is correct?

Technician A checks crankshaft endplay or end clearance with a feeler gauge. Technician B uses a dial indicator. Who is correct?

Technician A says engine blocks are made from cast iron. Technician B says engine blocks are made from aluminum. Who is correct?

Which of the following can be reconditioned by grinding?

According to many experts, what is the maximum amount of warpage that is acceptable on a cast iron cylinder head?

Multiple valve engines tend to be more efficient than two valve per cylinder engines because they

Technician A says positive valve stem seals fit tightly around the top of the stem. Technician B says positive stem seals scrape oil off the valve as it moves up and down. Who is correct?

Hemispherical combustion chambers are being discussed. Technician A says the flame path from the spark plug to the piston head is short, which provides efficient burning. Technician B says cross-flow arrangement of the inlet and exhaust valves allows for a relatively free flow of gasses in and out of the chamber. Who is correct?

Technician A says heat is transferred from an exhaust valve to the cylinder head through the valve seat. Technician B says some exhaust valves have a hollow stem filled with sodium to transfer heat to the valve guide. Who is correct?

Which of the following is a function of all ignition systems?

Reach, heat range, and air gap are all characteristics that affect the performance of which ignition system component?

Modern ignition cables contain fiber cores that act as what in the secondary circuit to cut down on radio and television interference and reduce spark plug wear?

The firing time across the spark plug electrodes in modern engines is between

The typical amount of secondary coil voltage required to jump the spark plug gap is

In EI systems using one coil for every two cylinders Technician A says two plugs fire at the same time, with one wasting the spark on the exhaust stroke. Technician B says one plug fires in the normal direction and the other in reversed polarity. Who is correct?

While discussing ignition timing requirements Technician A says more advanced timing is desired when the engine is under a heavy load. Technician B says more advanced timing is desired when the engine is running at high engine speeds. Who is correct?

Technician A says spark plugs are part of the secondary ignition circuit. Technician B says the battery is part of the primary ignition circuit. Who is correct?