Misfiring

2012 CHEVROLET SONIC
106,000 MILES • 1.8L • 4 CYL • 2WD • AUTOMATIC
Avatar
ERIC PIPKIN
  • MEMBER
  • 1 POST
Changed coil pack, and plug, but is still doing it.
Feb 2, 2020 at 6:29 AM
Repair Safety Notice: This information is for general instructional purposes only. Vehicle repair can be dangerous. Verify all information, follow manufacturer service procedures, use proper tools and safety equipment, and consult a qualified repair shop when needed.
Advertisement
Avatar
KASEKENNY
  • AUTOMOTIVE REPAIR CONTRIBUTOR
  • 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
Feb 2, 2020 at 3:36 PM
Advertisement