Indications Of Bad Or Failing Spark Plugs

The spark plug’s job is to generate a powerful spark between the electrodes precisely at the prescribed time to create the trigger for gas mixture combustion.

When the ignition system’s high voltage is put between the spark plug’s centre electrode and ground electrode, the insulation between the electrodes breaks down, current flows in the discharge phenomena, and an electrical spark is produced.

This spark energy causes the compressed air-fuel mixture to ignite and burn. This discharge has a very short duration (approximately 1/1000 of a second) and is exceedingly complicated.

Spark plugs are not used in diesel engines! They use extremely high compression to generate extremely high temperatures, which then auto-ignite diesel fuel. Glow plugs are used in some diesel engines to help generate more heat upon starting, especially in cold weather.

How Can You Tell If a Spark Plug Has Failed?

Because spark plugs play a vital part in the combustion process, one or more signs of failure may arise. Additional testing may be required, however here are some of the potential issues:

Starting the vehicle is difficult
 

Misfiring causes a rough idle
 

Power decline
 

Inadequate fuel economy
 

A faulty spark plug could potentially cause the check engine light to illuminate or flash. If you see any of these symptoms, take your car to a skilled automotive technician to have the problem examined. A proper diagnosis is required to guarantee that the correct repair is carried out.

The Advantages of Changing Spark Plugs

Service intervals vary, but on late-model vehicles, most manufacturers recommend replacing spark plugs between 60,000 and 100,000 miles. Specific applications and vehicle usage must also be addressed.

When you replace your spark plugs, you should notice the following advantages: