Auto Repair in Mint Hill – Do I Need Spark Plugs?


The average American doesn’t drive to work every morning in a V10 diesel truck. Chances are this morning, you fired up a gasoline car, and if you did, congrats! You are the owner of happy and healthy spark plugs. Spark plugs in gas-based engines are your car’s heartbeat, in a sense – they are what make your engine actually burn gasoline and run.


What is a spark plug?


A spark plug, quite simply, is a plug that creates a spark. When gasoline is injected around the spark plug, ignites a spark causing the gasoline to combust, causing propulsion.


How does it work?


The model provided by Car Hospital below explains the inner details of a plug.

Auto Repair in Mint Hill


Does everyone have spark plugs?


No, only gasoline or hybrid cars do. Electric cars do not have gasoline to combust and diesels combust their fuel with pressure, not spark.


How do I know if I need new spark plugs?


Spark plugs need replacement for one of two reasons; the first being it has outlived its lifespan (the space in which spark plugs ignite expands over time, causing misfires) or it no longer functions for a physical reason and misfired. You will know of you have a misfire because your check engine light will blink, and your car will shake – sometimes vigorously.

Auto Repair in Mint Hill

An example of a spark plug measuring tool, used in determining a spark plug’s remaining life.


Can misfires damage my engine?


In the short term, no. However, fuel efficiency will be drastically reduced. Over time this can cause problems such as premature engine deterioration, though.


How often should my plugs be checked?


Spark plugs should be checked every 30,000 miles, and replaced when the gap is deemed too large.


Auto Repair in Mint Hill

Measuring a spark plug’s gap.


How is a spark plug replaced?

A spark plug is replaced with everyday ratchets, a torque wrench, and dielectric grease. First, the technician removes the spark plug’s protective outer shell and electricity generators, sometimes called the “coil” and “boot.” Once these are removed and the spark plug is exposed, the plug is removed with a ratchet, similar to how a regular lug nut is removed. The new plug is inserted, and torqued to manufacturer specs. dielectric grease is applied to the boot, and then is reattached. this can take anywhere from 30 minutes to 2 hours, depending on the amount of spark plugs, the position they’re in inside the engine, and the re-placer’s speed.

Ken Manchester