I just change the sprak plugs on my 06 colorado n the engine light turn on help meeee its back fireing whats the caliber on the spark plug
Feb 8, 2011 at 3:01 PM
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
WRENCHTECH
AUTOMOTIVE REPAIR CONTRIBUTOR
20,761 POSTS
That's a coil on plug system so you probably did something wrong with one of the coils or cracked a plug. Have the check engine codes read and they should tell you which cylinder has the problem.