Car misfiring or jerking

78,000 MILES • 2.4L • 4 CYL • 2WD • AUTOMATIC
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BETO BARRERA
  • MEMBER
  • 1 POST
My car started feeling jerky then the check engine lights came on and gave a code saying cylinder four was misfiring. changed the spark plugs. now the car doesn't misfiring while driving, but still misfiring or jerking when the car is parked idling or at a stop light or stop sign and when reversing. but drives fine when accelerating.
Jul 12, 2019 at 12:44 AM
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JACOBANDNICKOLAS
  • ✓Experienced Mechanic
  • 110,248 POSTS
Welcome to 2CarPros.

Has the check engine light come back on? Also, you indicate it is rough at idle and in reverse. Have you confirmed there are no broken engine mounts?

Take a look through this link and let me know if it seems to mirror what you are experiencing.

https://www.2carpros.com/articles/engine-vibration-at-idle

Also, make sure there are no engine vacuum leaks. That can cause a rough idle.

https://www.2carpros.com/articles/how-to-use-an-engine-vacuum-gauge

Also, here are a few links that discuss engine mounts and what they can cause:

https://www.2carpros.com/articles/vibration-noise

https://www.2carpros.com/articles/how-a-motor-mount-works

https://www.2carpros.com/articles/replace-motor-mounts

Let me know if any of those links help. If you find a broken mount or need directions on a specific component, let me know. Also, let me know if you have any questions.

Take care,
Joe
Jul 12, 2019 at 1:46 PM
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