Spark Plugs and Ignition Coils

 

The ignition system is responsible for producing and transferring the spark energy to the combustion chamber at the correct time. Spark plugs are installed in the cylinder head and deliver spark current to the combustion chamber. Symptoms of malfunctioning spark plugs include:

 

Hard starting

Lack of power

Misfiring or backfiring

High emissions

Reduced fuel economy

 

Ignition Coils:

Produce high voltage spark energy sufficient to properly ignite the air/fuel mixture inside the combustion chamber.  The On-Board computer or ignition module typically controls ignition coils. Symptoms of malfunctioning ignition coils include:

 

No start

Hard starting

Misfire under a load

High emissions

 

Ignition Wires

Provides a conductive path for the spark current from the distributor cap or coil to the spark plugs.  Contain the spark energy. Symptoms of malfunctioning ignition wires include:

Hard starting

Misfiring or backfiring

Misfire under a load

High emissions

 

Here are the Benefits of a Properly Maintained Ignition System

Quick starting

Increased performance

Increased fuel economy

Lower emissions

Cure specific driveability concern

Conserves spark energy for the combustion chamber

Regulates spark energy