So, what happens when spark plugs go bad?! 6 most common symptoms of bad spark plugs 1. A spark plug wouldn’t cost much, the replacement is easy and can be done yourself. We will explain the bad spark plug symptoms below, and if your vehicle shows more than one sign, it is better that you take it to a mechanic and get it replaced. These signs tell us that there is something wrong with the ignition system and it could be due to a faulty spark plug. The signs that we get could be symptoms of a bad spark plug, but it could also be due to damages to other components in the ignition system, like the ignition coil, sensors, fuel injector, etc. However, there is no clear sign which exclusively says that the spark plug is the culprit. The signs, if not diagnosed and fixed timely, could lead to bigger problems like a bad ignition coil, engine problems, etc. When the spark plug has issues, whether it is damaged, clogged due to carbon deposits, or has an imbalanced gap, it will be evident from the performance of the car. Being the component that initiates the ignition and starts the engine, it is extremely important to check the spark plug frequently and keep it healthy all the time. As time passes, some components fail and as a result, the overall performance will be affected, ranging from engine misfires and stalling to poor fuel economy.Ī bad spark plug, if not maintained and cleaned properly, could get damaged or clogged by carbon deposits in about a year. Learn more.Įach engine component has to work perfectly for the smooth and seamless running of your car. Our endorsements are strongly based on our intensive research online and we do not accept payments or gifts in return.
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