Engine diagnostics revision

What is the function of the cylinder head gasket, and what are the consequences of a blown head gasket?

• The cylinder head gasket seals the engine cylinders to ensure maximum compression and prevent leakage of coolant or engine oil into the cylinders. A blown head gasket can lead to engine overheating, loss of power, and coolant leakage.

• The cylinder head gasket is used to lubricate the engine parts. A blown head gasket can cause excessive lubrication and engine noise.

• The cylinder head gasket is responsible for the electrical connections in the engine. A blown head gasket can lead to electrical failures.

• The cylinder head gasket is used to filter the air entering the engine. A blown head gasket can cause air filter clogging.

What is the role of the crankshaft and how does it interact with the connecting rods?

• The crankshaft converts linear motion into rotational motion and is connected to the connecting rods.

• The crankshaft stores electrical energy and powers the connecting rods.

• The crankshaft filters engine oil and lubricates the connecting rods.

• The crankshaft cools the engine and regulates the temperature of the connecting rods.

What is the function of the camshaft, and how does it differ between overhead cam (OHC) and overhead valve (OHV) engines?

• The camshaft controls the timing of the engine's valves, and in OHC engines, it is located above the valves, while in OHV engines, it is located in the engine block.

• The camshaft controls the fuel injection, and in OHC engines, it is located in the engine block, while in OHV engines, it is located above the valves.

• The camshaft controls the exhaust system, and in OHC engines, it is located in the engine block, while in OHV engines, it is located above the valves.

• The camshaft controls the ignition timing, and in OHC engines, it is located above the valves, while in OHV engines, it is located in the engine block.

What is the purpose of the piston rings and their importance for engine performance?

• To seal the combustion chamber, support heat transfer, and regulate oil consumption.

• To increase the engine's horsepower and torque.

• To reduce the engine's weight and improve fuel efficiency.

• To enhance the engine's cooling system and reduce emissions.

What are the different types of valves used in internal combustion engines, and what are their advantages and disadvantages?

• Poppet valves, sleeve valves, rotary valves

• Butterfly valves, gate valves, ball valves

• Check valves, needle valves, diaphragm valves

• Globe valves, pinch valves, plug valves

What are the key components of an engine's cooling system?

• Radiator, water pump, thermostat, and cooling fan

• Alternator, battery, spark plugs, and distributor

• Fuel injector, carburetor, air filter, and fuel pump

• Exhaust manifold, catalytic converter, muffler, and tailpipe

What is the function of the fuel injectors and their role in engine operation?

• To supply air to the engine

• To inject fuel into the engine's combustion chamber

• To cool down the engine

• To lubricate engine parts

What is the purpose of the catalytic converter, and how does it help reduce emissions?

• To increase engine power by enhancing fuel combustion.

• To convert harmful pollutants into less harmful emissions.

• To improve fuel efficiency by recycling exhaust gases.

• To reduce engine noise by muffling exhaust sounds.

What is the function of the alternator and its importance for vehicle operation?

• It powers the engine directly.

• It charges the vehicle's battery and powers the electrical system when the engine is running.

• It controls the vehicle's speed.

• It provides fuel to the engine.

What is the starter motor, and how does it start the engine?

• A device that powers the headlights

• A component that charges the battery

• A motor that initiates the engine's operation

• A part that controls the air conditioning