How do I know if my ignition coil is bad?

Answer

There are several different symptoms that may surface if a car has a bad ignition coil, including backfiring, trouble starting the vehicle, engine misfires, stalling and poor gas mileage. Any one of these problems, or an aggregation of them, indicates a vehicle that has a dysfunctional ignition coil.

The ignition coil is the part of an automobile that takes power from a generator and transfers it to the spark plugs, igniting the fuel. This makes the vehicle start running and is a necessary part of the ignition process. However, it is possible for an ignition coil to become dysfunctional and cause a wide variety of car problems.

Because ignition coils are so important to the start-up process of a vehicle, they can cause problems when the car is turned on. If a vehicle has trouble starting up, there may be a bad coil. Regular and repeated backfirings are also a signal that a car's ignition coil is beginning to lose its functionality, according to DoItYourself.com. Sometimes a bad ignition coil has an impact on the car's gas mileage, causing it to become less fuel efficient over time. Other problems related to bad ignition coils include regular stalling and coughing, sputtering sounds when a car is started.

Q&A Related to "How do I know if my ignition coil is bad?"
Loosing power is one way to know if your ignition coil is going bad. Another way to tell is to pull your the coils off and look on the back. If you see white burn marks, they are
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1. Turn on the ignition but don't start the car at this stage. Using a multimeter in the DC volt position, check for a 12 VDC supply coming to the coil's positive terminal. (This
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No electrial spark or fire at the plugs.
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A bad pickup coil in the distibutor will generally fail at extreme tempuratures(mostly hot).It can cause backfiring,missing, and crank but no start.I have also seen the reluctor(on
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