Back to all

Low Power Mystery (Ignition Coil Service)

September 6, 2020

It's no fun when your vehicle just doesn't run the way it used to.   You may notice (especially in cold weather) the engine won't start easily or when it does start, it doesn't run smoothly. It may not have much power at all. You also may have had to stop at the gas station more often, a sign your fuel economy isn't what it used to be. 

There could be a few different things that cause those symptoms, but one culprit could be a bad ignition coil. The coil takes the voltage from your battery and multiplies it before that power is sent over to a spark plug. That allows the plug to fire off a good jolt of electricity that ignites the fuel in your cylinder and powers the engine. 

There's usually one ignition coil for each cylinder (or sometimes for a pair of cylinders). If only one of them is not pushing out enough electricity, it can cause big trouble with your engine performance.  Other signs of a bad ignition coil include engine backfire, an oil leak and your Check Engine light coming on.   When that light comes on and you have some of those other signs, you need to have your repair facility check things out fairly soon because you may be damaging your engine and wind up with a far more expensive repair.

A technician will check for a computer code to pinpoint which cylinder is having the problem.  Using other diagnostics, the technician can rule out other components that might be causing the engine to misfire.  Ignition coils usually last 100,000 miles/160,000 km, but other engine conditions can cause them to fail before then. 

Your service advisor may suggest getting all your coils replaced even though only one is malfunctioning. That's probably a good idea in a higher mileage vehicle since the other coils may be close to failure, too. It's also wise to do that if your vehicle's coils are located in a hard-to-reach spot so you likely won't have to spend the money for that labor again when another one fails.

Tuffy Tire & Auto Service Pickerington
1223 Hill Road N.
Pickerington, Ohio 43147
614-751-0111
http://www.tuffypickerington.com

Need Service?

Request a Quote

More articles from Tuffy Pickerington

Take Charge! (Battery Testing)

April 14, 2024

OK, so you probably take your vehicle's battery for granted. Turn the key or push a button and it starts right up. During times of warmer weather, you probably think your battery can take it easy. But it may surprise you to learn that hot weather can be much harder on a vehicle's battery than ... More

Why Alignment Matters (Vehicle Alignment Maintenance)

April 7, 2024

It's one of those things that can happen on a multi-day road adventure or a quick trip to the grocery store. You hit a pothole, go too fast over a speed bump, nail a curb. When it happens, you think, "I wonder if that was hard enough to do any damage?" But things seem ok and you continue on yo... More

Direct Fuel Injection Update from Tuffy Tire & Auto Service Pickerington

March 31, 2024

For those of you in Pickerington, Ohio who pay attention to these things, you may have been hearing about the new direct injection engines and want to learn more about them. Some deliver the power of a V8 with the economy of a V6.For example, in one family of engines the conventional V6 makes ab... More