Internal combustion engines convert:

Which is NOT part of the four-stroke cycle?

Diesel engines use:

The main frame of the engine is the:

An example of an external combustion engine is a:

A two-stroke engine completes a power cycle in how many revolutions of the crankshaft?

Cylinders arranged in two rows forming a "V" is called:

An engine that uses fins on the block for cooling is:

Pistons for high-performance engines are usually:

What is the primary function of the crankshaft?

The part that stores energy from the power stroke is the:

The timing belt connects the crankshaft to the:

In a four-stroke engine, the air-fuel mixture enters during the:

The component that opens and closes the engine valves is the:

What seals the cylinder head to the engine block?

The system that provides clean air for combustion is the:

The mass airflow (MAF) sensor measures:

What regulates the amount of air entering the engine?

The main purpose of the lubrication system is to:

What type of engine uses a triangular rotor?

The oil pan is located:

Valve guides help to:

During the compression stroke:

A major disadvantage of two-stroke engines is:

The connecting rod connects the piston to the:

Engine bearings are used to:

The component that distributes fuel to the injectors is the:

Sodium-filled valves are used in:

The purpose of the exhaust manifold is to:

In a diesel engine, the intake manifold carries:

The part that creates the spark in a gasoline engine is the:

A turbocharger is used to:

The main function of piston rings is to:

The ECU (Engine Control Unit) is the:

The cooling system removes heat from the:

The correct order of the four-stroke cycle is:

A dual-fuel engine can run on:

The purpose of an intercooler is to:

Valve seats are important because they:

Always use _____ protection when changing oil or coolant.

The _____ converts the up-and-down motion of the piston into rotating motion.

_____ engines complete one power cycle in two piston strokes.

Fill in the blank: The engine's main structure that contains the cylinders is called the ________.

Fill in the blank: ________ valves often contain sodium for better cooling.

Fill in the blank: The ________ connects the piston to the crankshaft.

Fill in the blank: The ________ stores energy to keep the crankshaft turning between power strokes.

Fill in the blank: The ________ has lobes that push on valves to open them at the correct time.

Fill in the blank: Intake and exhaust ________ control the flow into and out of the cylinder.

Fill in the blank: The ________ system delivers oil to all moving engine parts.

Fill in the blank: Never work under a vehicle supported only by a ________ jack.

Fill in the blank: The burning of fuel in the cylinder is called ________.

Fill in the blank: A ________ engine burns fuel outside the engine cylinder.

Fill in the blank: The ________ draws fuel from the tank and sends it to the engine.

Fill in the blank: The ________ mixture is ignited by a spark plug in a gasoline engine.

Fill in the blank: The ________ belt or chain ensures valves open and close at the right time.

Fill in the blank: The ________ manifold distributes air or air-fuel mixture to the cylinders.

Fill in the blank: The ________ manifold collects exhaust gases from all cylinders.

Fill in the blank: The ________ pan holds the engine's supply of lubricating oil.

Fill in the blank: The ________ gasket seals the joint between the oil pan and the engine block.

Fill in the blank: ________ engines are generally more fuel‑efficient but heavier than gasoline engines.

Fill in the blank: The ________ sensor helps the ECU determine how much fuel to inject.

Fill in the blank: In a ________ injection system, each cylinder has its own fuel injector.

Fill in the blank: The ________ stroke is when the ignited fuel pushes the piston down.

Fill in the blank: The ________ stroke pushes the burned gases out of the cylinder.

Fill in the blank: The ________ provides a mounting point for the spark plugs and contains the combustion chambers.

Fill in the blank: ________ are used in engines to support rotating shafts like the crankshaft and camshaft.

Fill in the blank: The ________ controls the opening of the throttle valve in the throttle body.

Fill in the blank: A ________ is an aftermarket air intake system that draws in cooler air from outside the engine bay.

Fill in the blank: The ________ transfers the force of combustion from the piston to the crankshaft.

True or False: It is safe to work under a car supported only by a hydraulic jack.

True or False: Gasoline and diesel engines work on the same ignition principle.

True or False: The crankshaft is directly responsible for opening the valves.

True or False: Two-stroke engines are more environmentally friendly than four-stroke engines.

Select True or False: All engine valves are made from the same material.

Select True or False: The flywheel helps to smooth out engine operation.

Select True or False: The oil pan is part of the cooling system.

Select True or False: The timing belt should be replaced periodically as part of maintenance.

Select True or False: A Wankel engine uses pistons and connecting rods.

Select True or False: The intake manifold on a diesel engine carries a mixture of fuel and air.

Select True or False: The main function of the piston is to seal the combustion chamber.

Select True or False: Engine bearings are designed to create friction.

Select True or False: The ECU (Engine Control Unit) can adjust fuel injection based on sensor data.

Select True or False: "V-type" and "Inline" refer to the ignition system type.

Select True or False: Goggles should be worn when working with batteries or coolant.

Select True or False: The compression stroke is the same in both gasoline and diesel engines.

Select True or False: The throttle body is located before the air filter.

Select True or False: A faulty head gasket can cause engine overheating.

Select True or False: The camshaft rotates at half the speed of the crankshaft in a four-stroke engine.

Select True or False: Synthetic rubber seals are used to prevent oil leaks.

Select True or False: The purpose of the exhaust system is to reduce noise and direct gases away.

Select True or False: A turbocharger is driven by exhaust gases.

Select True or False: Forged pistons are softer than cast pistons.

Select True or False: Valve guides prevent oil from entering the combustion chamber.

Select True or False: The water pump is a component of the lubrication system.

Select True or False: The correct bolt-tightening sequence is important when installing a cylinder head.

Select True or False: A dual-fuel engine can switch between gasoline and diesel.

Select True or False: The safe working load (SWL) is not important for jacks and stands.

Select True or False: The fuel pressure regulator maintains constant pressure in the fuel rail.

Select True or False: The lubrication system only lubricates the crankshaft and bearings.