Most ignition coil symptoms indicate an underlying vehicle problem that warrants a trip to a mechanic. An ignition coil system is made from a primary and a secondary coil that transmit energy to the engine. Starting a car's ignition sets off an electrical reaction that begins in the battery. The primary coil gets a supply of electricity, leading to a magnetic field. This allows an electrical current to reach the secondary coil. At this point, the voltage has enough strength to activate the spark plug. The resulting spark ignites a mixture of air and fuel that allows the engine to turn over. Any problems with this system can lead to a car that does not start properly.
1. Stalled Engines
One of the most frequent ignition coil symptoms is engine stalling, which entails an engine starting but then losing power. A stalled engine can lead to a failed engine without the needed inspection and repair from a technician. This problem can be especially dangerous because the engine can stall without warning, increasing the chances a driver will get in a collision. Stalling occurs when one of the engine coils is not working correctly, leading to an inconsistent current to the engine from the spark plugs.
2. A Misfiring Engine
Spark plugs can sometimes misfire, causing erratic engine functionality. When the pistons do not fire on a consistent basis, the engine can start sputtering while the car is running. If the driver puts the vehicle in park but leaves the engine running, the car can often shake. Accelerating can also cause the car to lurch from one side to the next.
3. A Car That Does Not Start
Another sign of a malfunctioning engine coil is a vehicle that is difficult to start by turning the ignition key. Turning the key normally gives the spark plug its needed charge. If this component does not receive this energy source, the engine will not turn over.
4. A Backfiring Car
The combination of oxygen and fuel needed to ignite an engine relies on the spark plug. A faulty spark plug does not give the engine pistons a consistent energy source. Any trapped and unburned fuel is forced through the exhaust system, creating what mechanics call a backfire. A backfiring car does not always indicate ignition coil failure, but it is a sign of other possible problems. These issues can lead to further mechanical issues in the future.
5. Poor Fuel Use
Ignition coil problems often lead to decreased fuel economy since a misfiring engine is not an efficient one. A certain percentage of fuel is lost through the exhaust system, and a vehicle owner may notice that he or she needs to refuel the car on a more frequent basis. A faulty ignition system can increase weekly gasoline expenses in addition to other risk factors.
Noticing ignition coil symptoms early can save a driver money in the long run. An experienced mechanic can diagnose these problems and give each customer a reasonable cost estimate. A moderate repair bill is worth removing the dangers associated with a malfunctioning coil system.
Matt works with: http://www.davidstanleychevrolet.com— A reputable dealer of Chevrolet trucks. He has covered automotive design trends for 15 years, and enjoys writing about auto repair.