The ignition system provides the spark that ignites the air fuel mixture. There are many different types of systems but they all perform the same basic function.

A diesel engine does not use a spark and is the most basic design using the hot highly compressed air and fuel mixture to squirt a fine stream of fuel which self combusts from the extreme heat and pressure. The spark plug is used for gasoline engines. They have a certain life span depending on their type and the materials from which they're made.

Most late model engines use a platinum tip or an iridium tip electrode spark plug. These elements are highly corrosion resistant, iridium being the most, and both with high catalytic properties making them the ideal choice for spark plugs. Some other metals used are yttrium, tungsten, palladium, silver, and gold. The purpose of these metals is to maintain a sharp edge on the electrode to transfer electrons more efficiently and last longer while doing it.

Unfortunately the cost of these elements is high, but these spark plugs do last twice, sometimes three times longer than traditional nickel-iron or copper ones. The reason the spark plugs need to be replaced at their intervals is because the transferring of electrons and the constant cold then hot then cold again environment they are exposed to causes them to break down and perform poorly if left in service too long.

Some systems use ignition wires and a distributor to carry the spark from the coil to the spark plug. These too can wear out causing rough running of the engine and that annoying check engine light. It is very important to have this light diagnosed before it is too late and the repair becomes more costly. Schedule an Appointment  to allow us to inspect your vehicle and ensure proper operation of the ignition system.

~ Curtis Messer