The ignition coil plays an important role in the vehicle’s ignition system. It is an electric component that basically acts as a converter. It transforms the usual 12 volts to a few thousand that are necessary to start the vehicle’s engine.
Mostly older model vehicles use one coil in their ignition system but in newer models, you will see a separate coil for each spark plug. They will help in generating enough power to initiate the combustion process in the engine.
Bad ignition coil can easily lead to major engine issues. Even if you have a single faulty ignition coil, you should immediately stop driving your vehicle or you will probably damage your vehicle’s engine. If you don’t know about how to find out if you have a faulty ignition coil, then don’t worry because it’s pretty easy to diagnose a problem like this. In this article, you will see a list of few symptoms that are related to bad ignition coil.
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Below are given few symptoms that might suggest that it’s time to replace your ignition coils:
Table of Contents
Engine Performance Issues
The most common symptom to find out if you have a bad ignition coil is engine performance issues. If you are a car enthusiast then you might know that ignition coils plays a really important role and if faulty, can lead to dozens of engine-related problems. Few examples of engine performance issues are misfires, rough engine idle, reduced mileage, and low power and acceleration.
Engine Light Turns On
If your vehicle’s Check Engine Light (CEL) turns on when you start your engine then there might be a potential issue related to ignition coils. Bad ignition coils can signal the computer about engine issues and then it will turn the CEL light on. However, the light can also be set off if there is a problem related to ignition circuits.
Problem Starting The Engine
There might be a chance that you may face difficulty starting the engine if you have faulty coils. However, that same exact problem can also be caused by a variety of different reasons and the best example of that is a flat battery.
Increase in Emissions/Gas Smell From Exhaust
A bad ignition coil can also increase emissions from your vehicle. This could be a potential problem especially if you are like me who live in a region with strict emission laws.
You will likely notice a strange gas smell coming from your exhaust pipe due to failure in burning fuel caused by faulty ignition coil. It is more detectable when you start your car in winters.
Vehicle Engine Not Starting
You can also find yourself in a situation where your vehicle won’t even start due to a bad ignition coil, especially if your vehicle has a single ignition coil to spark all the cylinders. In case of a failed coil, your vehicle’s engine won’t have any spark, which will render a no-start situation.
So, this was our post on How To Find Out If You Have Bad Ignition Coil. If your vehicle’s ignition coils are faulty too then take your vehicle to a good repair shop and have these coils replaced immediately.