The Importance Of Spark Plugs In Your New Car or Truck.

Do you know what spark plugs are used for? Do you know how important they are? Well they are a very important part of your new or used car or truck. They must be properly working for your vehicle to be working. 

spark plug  is an electrical device that fits into the cylinder head of some internal combustion engines and ignites compressed fuels such as aerosol gasoline, ethanol, and liquefied petroleum gas by means of an electric spark. – Wikipedia

Ok… So why are these funny looking things so important?

In a gasoline engine the importance of good sparkplugscannot be denied. The electrical arc between the electrode and the ground strap is like a miniature bolt of lightning that ignites the air fuel mixture and in turn generates the power that drives the wheels. 

These miniature lightning bolts are commonly called sparkplug firing by most mechanics. If the sparkplug doesn’t fire, the engine doesn’t start. When diagnosing a no start condition some mechanics will say the reason the engine won’t start is because there is no fire.

It is the ignition system that produces the electrical energy that fires the plug. Spark also must be maintained long enough to allow complete combustion of the air fuel mixture in the cylinder. The ignition system then has to deliver this electrical energy to each sparkplug at the right time. – Online Auto Repair

Can you now understand why it is so important to have good spark plugs? Bad spark plugs = car can’t/may not start. When you come to visit your Fort Worth chevy dealer for a tune-up make sure you ask if they will be replacing the spark plugs. Feel free to ask me any questions.

Thanks to Brandi Hodge for contributing.

2 comments to The Importance Of Spark Plugs In Your New Car or Truck.

  • Jim Quinn

    I just pulled the spark plugs out of my ’57 BelAir (it has a 327 cu.in. motor) and found they need to be replaced. Is there ANY advantage in using the new IRIDIUM plugs, or are the AC/DELCO 45R still the best choice? Thanks

    • Hagen Durant

      The iridium plugs are designed to last longer. They are not necessarily better than the AC/Delco 45R. The system on the ’57 does not really even need the “R” plugs as it is older. If you decide to change to iridium, defiantly change the wires as well.

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