Quick Answer: What Is The Main Function Of Spark Plug?

Are spark plugs only used for starting?

Spark plugs have a very simple yet essential job.

They provide the spark necessary to ignite gasoline in the combustion chamber.

Without working spark plugs, your engine will not run (there will be nothing to ignite the fuel and start the combustion process).

The engine has one spark plug per cylinder..

How do I know if my spark plugs need changing?

Here are seven symptoms that let you know it’s time to replace your spark plugs.The car is hard to start. … The engine misfires. … The car gets poor fuel economy. … Rough engine idle. … Your car struggles to accelerate. … The engine is really loud. … Your ‘check engine’ light is on. … Frequency of replacing spark plugs.

How long does a spark plug last?

How long spark plugs last varies by manufacturer and vehicle, but on many vehicles today, they should be good for 100,000 or more miles. Some vehicles, though, will have shorter intervals, particularly performance and luxury models.

What are the two types of spark plugs?

Spark plug typesCopper spark plugs. Copper spark plugs have a copper core and use a nickel alloy on the working end of the electrode–the part that generates a spark. … Platinum spark plugs. … Iridium spark plugs. … Pulstar spark plugs. … Reducing emissions with every spark plug.

What does your spark plug tell you?

Your spark plugs hold numerous clues about your engine’s conditition. … Check for problems in your engine’s cooling, a lean fuel mixture or incorrect ignition timing. A melted electrode on your spark plugs means that they’ve been running too hot for too long and could burn a hole through the top of a piston.

How do I know if my spark plug is misfiring?

Symptoms of misfiring spark plugs include rough idling, uneven power when accelerating, and an increase in exhaust emissions. Note that a check engine light could be potentially caused by a number of things, not just a spark plug problem.

What does the Y mean on a spark plug?

The letter “Y” indicates a V-grooved center electrode. The number after the – indicates the recommended spark plug gap in tenths of a millimeter.

Does changing spark plug wires improve performance?

Running on bad spark plugs or spark plug wires can end up using more fuel. High-quality wires will allow the spark plugs to start faster and keep your engine running more effectively. Save money. Routinely swapping out your spark plug wires can save you cash.

What a good spark plug looks like?

A normal plug will have brown, gray, and tan on the side electrode. Any of these colors generally means your spark plug is still good. Fouled spark plugs will either be caked in oil, have black carbon deposits, or appear to be burned and blistered with a white side electrode.

What happens if you don’t change your spark plugs?

Spark plugs will deteriorate over time, so if they are not replaced, various engine issues will arise. When the spark plugs do not spark adequately, the combustion of the air/fuel mixture becomes incomplete leading to loss of engine power, and in the worst case scenario the engine will not run.

What are the two main categories of ignition system?

There are three basic types of automotive ignition systems: distributor-based, distributor-less, and coil-on-plug (COP). Early ignition systems used fully mechanical distributors to deliver the spark at the right time. Next came more reliable distributors equipped with solid-state switches and ignition control modules.

What is the purpose of an ignition coil?

An ignition coil (also called a spark coil) is an induction coil in an automobile’s ignition system that transforms the battery’s voltage to the thousands of volts needed to create an electric spark in the spark plugs to ignite the fuel.

What is done in an ignition process?

Ignition involves four basic and sequential functions: the provision of low-voltage electricity, amplification of the voltage to a high level, distribution of a high-voltage electrical current pulse to each of the combustion chambers and, finally, discharge in the form of sparks.

Can a spark plug kill you?

A spark plug has a lot of voltage but small amperage. In other words, the Volts are there but they have no strength. A bit like the taser the police force uses. It probably will not kill you but it may hurt you.

What is the main function of ignition system?

The purpose of the ignition system is to create an electric spark in the engine combustion chamber, at exactly the right time, which will ignite the mixture of petrol and air.

What are the parts of a spark plug?

A spark plug comprises three main parts: the housing, insulator, and electrodes.

What are the requirements of a spark plug?

Requirements of a Spark PlugIt must be reliable at high voltage transmission i.e. up to 40,000 V.It must have good insulation capability even at temperatures of 1000 0C, and prevention of arcing and flashover.It must possess resistance to thermal shock (Hot exhaust gases-cold intake mixtures)More items…•

What part of a spark plug is Iridium?

Iridium spark plugs feature a fine wire center electrode that is designed to conduct electrical energy better and increase firing efficiency. There is a price for this precious metal. Iridium spark plugs are typically the most expensive, ranging from $8 to $15 each.