Backfire popping

2000 DODGE DURANGO
186,000 MILES • 4.7L • V8 • RWD • AUTOMATIC
Avatar
EARL SMITH
  • MEMBER
  • 1 POST
I just changed my spark plugs and when i started the vehicle it started backfiring. it was not doing it before i swapped the spark plugs.
Oct 3, 2017 at 4:31 PM
Advertisement
Avatar
STRAILER
  • ASE Certified Mechanic
  • 54,832 POSTS
  • ASE Certified Mechanic
Hey Earl,

It sounds like one of two things has happened, either the firing order on the coils got mixed up or you cracked one of the plugs installing them.

Here is a guide and a diagram to help get the problem fixed:

https://www.2carpros.com/articles/how-to-change-spark-plugs

Please let us know what happens and upload pictures or videos of the problem.

Cheers, Ken
Oct 4, 2017 at 3:02 PM
Join 2CarPros for free, one of the most advanced car repair communities on the internet. From first-time drivers to seasoned mechanics, everyone is welcome to reply, share details, and get better answers. You can add a temporary image or video first; uploads are limited to 20 MB.
Ask a Free Question
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.