Misfiring

Tiny
ERIC PIPKIN
  • MEMBER
  • 2012 CHEVROLET SONIC
  • 1.8L
  • 4 CYL
  • 2WD
  • AUTOMATIC
  • 106,000 MILES
Changed coil pack, and plug, but is still doing it.
Sunday, February 2nd, 2020 AT 6:29 AM

1 Reply

Tiny
KASEKENNY
  • MECHANIC
  • 18,907 POSTS
Have you pulled the codes to determine which cylinders are missing?

I attached the testing for misfires assuming you have a P0301,2,3, or 4.

Clearly there are other things that can cause a misfire but we need to limit them down. Let's start with the codes and go from there. Thanks

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

https://www.2carpros.com/articles/engine-misfires-or-runs-rough
Images (Click to make bigger)
Thumb
Thumb
Thumb
Thumb
Thumb
Thumb
Thumb
SPONSORED LINKS
Was this
answer
helpful?
Yes
No
Sunday, February 2nd, 2020 AT 3:36 PM

Please login or register to post a reply.

Related Engine Misfire Content

Intermittent Misfire
VIDEO
Intermittent Misfire
Instructional repair video
Misfire Random Code P0300
GUIDE
Misfire Random Code P0300
The world of automotive diagnostics can be complex, with numerous codes and potential issues to keep track of. One of the more common engine diagnostic codes is P0300, which...

Sponsored links