What Are 7 Signs Your Ignition Coil Is Failing?

　　A faulty coil may cause major performance and structural problems in your vehicle, such as:

　　Your car will not start

　　Your inspection engine light is on

　　Your engine stalls

　　Reduce fuel economy

　　You see an oil leak

　　Backfire and poor catalytic converter performance

　　You are late for a new spark plug

　　So... what is an ignition coil?

　　The ignition coil is the unsung hero of the engine. The spark plug has all the glory of providing sparks to ignite the combustion, but it is the ignition coil that provides electricity to the spark plug. The coil draws voltage from the 12V battery, amplifies it, and then sends it to the spark plug. Just as it is important to know when a spark plug fails, it is equally important to know the signs of ignition coil failure.

　　7 signs that the ignition coil is malfunctioning

　　Your car will not start

　　There is nothing more failure than jumping into your car, turning the key, and making it unable to start. Although there are many problems that may cause the car to fail to start, faulty ignition coils are ranked first. If you notice that your car is difficult to start in the cold, this is also a potential warning sign that the ignition coil is malfunctioning.

　　Your inspection engine light is on

　　There are good reasons for the horrible inspection of engine lights. If your vehicle has a performance problem, such as a fire, the computer will trip and the check engine light will come on. Since various problems can cause the lights to trip, it is best to take your vehicle to a trusted mechanic.

　　Your engine stalls

　　Performance issues are some of the most common symptoms associated with ignition coil failure. Damaged sparks can cause many problems, including engine stalls, which can cause your vehicle to stall when it is parked.

　　Reduce fuel economy

　　If you notice a drop in MPG, it may be due to a malfunction of the ignition coil. If the spark plug gets less power from the battery, your vehicle will make up for the lack of power transmission by using more fuel and struggle in doing so.

　　You see an oil leak

　　The ignition coil is usually housed in an oil-filled shell. If the coil overheats, the housing may crack and leak oil. In turn, this may cause water to enter the carburetor and adversely affect vehicle performance.

　　Oil change service

　　Backfire and poor catalytic converter performance

　　It is not only embarrassing to let your exhaust pipe emit black smoke and gasoline smell, but it may be an early symptom of ignition coil failure. When unused fuel is discharged through the exhaust system, flashback occurs. If left unmanaged, it could severely damage your exhaust system, including the catalytic converter.

　　You are late for a new spark plug

　　If your spark plug is worn or malfunctions, the ignition coil will be forced to run at a much higher output, which will cause the ignition coil to fail prematurely.