Q: Can Ignition Problems Cause Engine Misfires?

asked by on

Can ignition problems cause engine misfires?

Faulty ignition system components are among the leading causes of engine misfires. Parts such as spark plugs, spark plug wires and boots, and ignition coils are highly stressed by high voltage and a high underhood temperature environment. While most of these components are greatly improved over older versions, some of them still have a recommended service life.

For instance, spark plug replacement is listed on the schedule of recommended maintenance provided by manufacturers to be performed at certain mileage intervals. However, ignition coil life varies widely and so they generally remain in service until or if, failure requires replacement.

Misfires can be caused by a variety of conditions so accurate diagnosis on today’s complex vehicles demands training, experience, and sufficient tooling. Replacing parts that aren’t needed can be avoided by allowing a certified technician to perform an accurate diagnosis of the engine misfire.

Was this answer helpful?

Need advice from certified mechanic? Get help now!

Over 1,000 mechanics are ready to answer your question.
The statements expressed above are only for informational purposes and should be independently verified. Please see our terms of service for more details
  1. Home
  2. Questions
  3. Can Ignition Problems Cause Engine Misfires?

Get an instant quote for your car

Our certified mechanics come to you ・Backed by 12-month, 12,000-mile guarantee・Fair and transparent pricing

Get a quote

What others are asking

Q: can the pcm/ecu/ecm drain the alternator

No, the alternator provides voltage to the battery and other components. The PCM could possibly discharge a battery if it leaves a relay or another circuit on, but most likely is is not the cause of your alternator failure. If...

Q: Jerking while driving..? 1997 Grand Jeep Cherokee

Hi there - the fact that the vehicle has this stumbling problem at the same speed (more or less) repeatedly suggests things that are dependent on that speed. These include the torque converter locking up (or trying to), or a...

Q: Cranks, will start if check engine light goes off. If light stays on, no start

If you have the ignition switch out of the vehicle then you may be getting a switch that is not making good contact internally. I would first recommend replacing the ignition switch and checking connector for any problems in the...

Related articles

What Causes Hoses to Leak?
While the largest part of your engine is mechanical, hydraulics plays a significant role. You’ll find fluids at work in a number of different areas. Your car's fluids include: Engine oil Transmission...
P0052 OBD-II Trouble Code: HO2S Heater Control Circuit High (Bank 2 Sensor 1)
P0052 code definition HO2S Heater Control Circuit High (Bank 2 Sensor 1) What the...
How Much Does a Mechanic Make in Vermont?
Automotive technician jobs in Vermont have an average mechanic salary of $37k, with some mechanics earning a salary of $53k.