The spark plug is a key component of the engine system, playing a major role in fuel economy, clean and efficient combustion, and the reliable operation of engines and catalytic converters. A typical spark plug can generate up to 100 sparks per second, amounting to over 20 million sparks throughout its lifespan.

A Spark plug consists of a metal threaded shell, a ceramic insulator, and a central electrode. The connector or terminal at the top of a spark plug is where the ignition wire attaches, the connector connects to the copper core of the center electrode. Next is the hex head. This is where you put your socket, which fits for tightening and loosening the plug in its hole in the engine.

Now below that's a gasket that compresses tightly against the cylinder head. The ground electrode is made of metal, with options ranging from stainless steel to titanium. It can come in several shapes as well, from notched or Y-shaped electrodes to triple electrodes.

The spark plug requires 15 to 20 thousand volts to generate a spark, whereas the car battery provides only around 12v so to create a higher voltage an ignition coil is used. It transforms the battery's low energy into the thousands of volts needed to create an electric spark in the spark plugs, to ignite the fuel. Inside every ignition coil, there are three main components an iron core a primary winding, and a secondary winding.

--- Time Stamp --
00:00 - Introduction to Spark Plug
02:02 - Construction
03:34 - How Spark Plug Sparks?
05:10 - Gap of Spark Plug
06:42 - Cold vs Hot Plug
07:36 - History of Spark Plug
11:36 - Copper Spark Plug
12:51 - Platinum Spark Plug
14:21 - Iridiuim Spark Plug
15:19 - Multi-Electrode Spark Plug

#sparkplug

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Disclaimer: This video is for educational purposes only. We are not in the auto repair business nor publish automotive service manuals. This video is not reviewed or authorized by any vehicle manufacturer. This video is intended only as general guidance. Every system is slightly different, so refer to the owner’s manual of your vehicle for any specific information about your model. Remember that only proper service and repair procedures will ensure your car's safe and reliable operation.

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