Engine Image Challenge: What Parts Can You Identify?

By: Robin Tyler
Estimated Completion Time
5 min
Engine block Parts of the engine found here include the piston, crankshaft and cylinders. Can you name this engine part?
Engine block
The engine block is the lower section of the engine. It is cast out of metal and houses the crankshaft, pistons and cylinders.
Manifold
Piston pin
Battery cap

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Sprockets Found all over the engine, these parts have teeth. What are they?
Flywheel
Sprockets
A sprocket is a wheel with a set of teeth on the outer circumference. It drives items like the chain or timing belt. Many sprockets are found in the gearing system on a vehicle.
Sparking cable
Vacuum gauge

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Spark plugs Can you name these, which help start your vehicle's engine?
Distributor cap
Ignition magneto
Spark plugs
Essentially, spark plugs are the most important factor in a vehicle starting. They provide the spark that ignites the air-fuel mixture which starts the motor and keeps it running.
Voltmeter

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Fuel pump This moves gasoline from the gas tank to the engine. What is it called?
Ignition box
Airbag sensor
Starter pinion gear
Fuel pump
A fuel pump makes sure gasoline gets from the area where it is stored (the gas tank) to the engine where it is burned to help propulsion.

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Radiator What is the name of this tank that holds coolant for the engine?
Switch cover
Air conditioning harness
MAP sensor
Radiator
The radiator is a reservoir that holds coolant. This is used to keep the engine cool while it is running. A thermostat determines when coolant is allowed to flow through the engine.

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Air filter Air entering the engine is cleaned by this engine part. What is it called?
Air filter
An air filter ensures the air entering the engine, which is used during the combustion process, is kept clean and free of any particles which may damage the engine.
Fuse
Performance chip
Transmission computer

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Oil pan This part of the engine is the reservoir where oil is stored. What is it called?
Engine cradle
Accessory belt
Oil pan
The oil pan serves as the oil reservoir. It's a removable part that is mounted on the bottom of the cylinder block. To drain the oil from the oil pan, simply remove a single bolt.
Air duct

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Valve cover Bolted to the cylinder head, can you name this protective cover?
Valve spring
Piston pin bush
Water pump pulley
Valve cover
The valve cover is bolted onto the cylinder head. It acts as a protective lid. The cover gasket, on the other hand, is placed between the valve cover and the cylinder head.

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Connecting rod Here we have the engine part that connects the piston to the crankshaft. Do you know what it is called?
Connecting rod
The connecting rod forms the mechanical link between the piston and crankshaft. It converts the up and down motion to the crankshaft's rotary motion.
Timing tape
Tappet
Crankcase

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Hydraulic valve lifter Can you name the engine part in this image, please?
Connecting rod washer
Hydraulic valve lifter
The hydraulic valve lifter is a lifting part that helps to maintain zero valve clearance. It uses hydraulic oil pressure to do this and eliminates the need for valve adjustment.
Overflow tank
Heat shield

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Bearing This part helps to reduce friction between various components and comes in different sizes. What is it?
Choke cable
Bearing
A bearing is a curved metal piece that reduces friction between components. It comes in many different shapes and sizes and is found throughout the engine.
Oil strainer
Throttle body

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Exhaust valve When the fuel/air mixture is burned within the engine, gases are released into the exhaust system through the ________?
Clutch cable
Intake manifold gasket
EGR valve
Exhaust valve
An exhaust valve is a camshaft-driven valve in the cylinder head. It releases exhaust gases after combustion.

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Oil control ring This small ring controls the rate of oil consumption within the cylinders of the engine. What is it called?
Bell housing
Oil control ring
The oil control ring controls oil consumption within the cylinder. It comes under the umbrella of piston rings.
Radiator bolt
Water pipe

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Timing belt Can you name this belt that helps the engine run efficiently?
Timing belt
The timing belt is a toothed belt. It's usually made of reinforced rubber and it rides on the sprockets. It ensures that the pistons fire at the correct time, thus ensuring the engine runs as efficiently as possible.
Water pump
Cooling fan
Muffler

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Oil filter Of the options below, can you name the part that keeps the liquid lubricating the engine, clean?
Resonator
Oil filter
Oil keeps all the moving parts of an engine lubricated. An oil filter helps to remove impurities in the oil that might damage the engine.
Radiator gasket
Catalytic converter

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Carburetor Please can you tell us which engine part is shown in this image?
Carburetor
The carburetor controls the amount of air and gasoline entering the engine. For example, too much gasoline and the engine will run rich, wasting gas that it cannot burn, too little gasoline and it will run too lean.
EGR valve
Oil pan
Fuel rail

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Distributor High-tension leads connect this part to the spark plugs. Please can you tell us what it is?
Water pump
Thermostat
Fuel pressure regulator
Distributor
The distributor makes sure the spark plugs fire in the right order. It is connected to the spark plugs through high-tension leads. The distributor forms a part of the ignition system.

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Ignition system Without this, your car will not start. What system are we talking about?
Radiator shroud
Ignition system
This system helps to start the engine by generating a spark that causes the air-fuel mixture within the combustion chamber to ignite. Without it, your car will not start, let alone run.
Crank case
Camshaft locking plate

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Intercooler Here we have a part only found in turbocharged engines. What is it?
Rocker arm
Pulley part
Valve stem seal
Intercooler
Found in turbocharged engines, an intercooler reduces the temperature of the air compressed by the turbocharger. This makes it denser when it is pushed through the engine, which produces more power.

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Fuel filter Can you name the part pictured here which removes impurities from gasoline before it enters the engine?
Engine shake damper
Air intake housing
Connecting rod bearing
Fuel filter
A fuel filter will help to remove impurities that might be in gasoline which, if they get into the engine, can cause complications. All gas is pumped through the filter before it enters the engine.

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Starter motor Turn the key and this engine part swings into action. Can you name it?
Camshaft pushrod
Starter motor
When you turn the key of your car, the starter motor begins the combustion process by rotating the engine. Sometimes, when your car will not start, the starter motor is not operating properly and could be jammed.
Connecting rod bolt
Piston pin bush

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Valve This part lets the fuel and air mixture into the piston. Can you name it?
Valve
The valves within an engine open and close in sequence to let the air and fuel mixture in. They then seal when combustion takes place and then let the gases produced out.
Engine cradle
Fan belt
Gudgeon pin

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Thermostat This part regulates when coolant is pumped into the engine from the radiator. Any ideas as to what it is?
Strainer
Oil gasket
Thermostat
A thermostat ensures that coolant is only pumped from the radiator once the engine has warmed up sufficiently. It does this by measuring the temperature of the engine.
Fuel water separator

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Piston Can you please name this engine part that moves in an up and down motion within a cylinder?
Piston
The piston fits snugly within the cylinder. It moves ups and down in the cylinder and is attached to a connecting rod. A piston will compress the fuel/air mixture in the cylinder and help cause combustion.
Exhaust flange gasket
Fuel distributor
Fuel injector

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Single overhead camshaft This engine part is often abbreviated to SOHC. Do you know what it is?
Single overhead camshaft
The single overhead camshaft refers to an engine with one camshaft that operates both the exhaust and intake valves.
Intake manifold gasket
Fuel injector nozzle
Distributor cap

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Balance shaft What is the name of the engine part shown here? It helps offset unwanted crankshaft vibrations.
Choke cable
Balance shaft
The balance shaft is a counterweighted engine shaft. It offsets unwanted crankshaft vibrations.
Spacer ring
Belt tensioner

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Cylinder liner Also commonly called a sleeve in engine lingo, can you name this car part?
EGR valve
Fuel line
Oil filter
Cylinder liner
The cylinder liner is also known as a sleeve. It's a replaceable, hollow tube that fits into the cylinder bore. The piston then moves within this liner.

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Wrist pin Piston pins are also sometimes called this. What part from the list below are we talking about?
Exhaust manifold
Wrist pin
A piston pin is known as a wrist pin. It's a tubular metal shaft that attaches a piston to a connecting rod.
Intake manifold gasket
Spindle

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Pulley Can you name this part, sometimes referred to as the harmonic balancer?
Pulley at the front of the crankshaft
he harmonic balancer is the pulley bolted to the crankshaft. It helps dampen crankshaft vibration, which means the engine runs smoothly.
Piston
Crankshaft
Cambelt

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Cylinder head bolts Can you identify the fastener shown in the image, please?
Cylinder head bolts
Head bolts are sometimes referred to as cylinder head bolts. These secure a cylinder head and gasket to the engine block. You don't want these to come loose.
Spark plug
Glowplug
Camshaft

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Sodium cooled valve This part is filled with an element on the periodic table. Can you name it?
Sodium cooled valve
The sodium-cooled valve is filled with sodium. duh! When heated, the sodium melts and helps to cool things down. This helps to regulate the temperature of the engine.
Tie rod end
Intake manifold
Throttle body

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Dual overhead camshaft This engine part is abbreviated as DOHC. What is it?
Fuel cooler
Choke cable
Heat shield
Dual overhead camshaft
A DOHC is a Dual (or Double) Overhead Camshaft. It's like a SOHC, but with an extra camshaft! This helps the engine produce more power, perfect for racers!

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Main bearings Can you name this engine part found between the crankshaft and the engine block?
Main bearings
The main bearings are between the crankshaft and the block. The crankshaft rotates on these bearings. All their parts are lubricated by oil.
Exhaust clamp and bracket
Muffler
Fuel pump gasket

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Expansion Plug Do you know the name of this engine part? It relieves pressure by expanding.
Steering arm
Fuel tank cover
Expansion plug
The expansion plug provides pressure relief. This is necessary when coolant expands due to freezing temperatures. If the plug didn't expand, the coolant might damage the radiator.
Crankshaft

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Rocker arm This lever is moved when the pushrod within the engine moves. Can you identify it?
Tie bar
Rocker arm
The rocker arm is driven by a pushrod or camshaft lobe. This transfers motion to open and close the valves, which in turn let in the air/fuel mixture.
Fuel cooler
Kingpin

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Piston pin clip Can you name this part that helps keep the piston in place?
Piston pin clip
The piston pin clip is used to keep the piston in place. It is secured on both sides. The piston then moves within the cylinder.
Distributor cap
Camber arm
Heat sleeve

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Crankshaft In this image, we have a vital part of an engine. What is it called?
Fan clutch
Cylinder head gasket
Crankshaft
When fuel burns in the engine, it pushes the pistons which in turn rotate the crankshaft. This causes the vehicle to move.
Crank pulley

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Turbocharger This engine part is only found on some cars and provides more power. What is it?
Spark plug
Hi-tension leads
Drive belt
Turbocharger
In simple terms, a turbocharger pushes more air into the engine, which in turn creates more power as more fuel is burned.

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Water pump In this image we have a car part that moves coolant through the engine. Can you name it please?
Valve stem seal
Water pump
This pump ensures that coolant which is kept in the radiator is moved through the coolant system on the car. It will only do so once the thermostat allows it to, and this depends on the temperature of the engine.
Oil pan
Radiator bolt

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Air intake manifold What is the name of this engine part?
Radiator pressure cap
Exhaust clamp and bracket
Lateral link
Air intake manifold
This part is essential to how your engine runs. It allows the fuel/air mixture into the cylinder of the engine where it will combust, causing the engine to run. It does this by evenly distributing the air/fuel mixture to the intake ports.

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